I'm feelingvery angry right now. I'm very angry right now.

Feeling angry doesn't sound natural.

I've just finished an online group English speaking class on a platform a few minutes ago. I've just finished an online group English speaking class on a platform a few minutes ago.

I've just finished an online English-speaking class on a platform a few minutes ago.

I've just finished an on-line group English speaking class on a platform a few minutes ago. I just finished an on-line group English speaking class on a platform a few minutes ago.

I've just finished an online group English speaking class on a platform a few minutes ago. I just finished an online group English speaking class on a platform few minutes ago.

I've just finished an online group English speaking class {on a platform} a few minutes ago. I've just finished an online group English speaking class {on a platform} a few minutes ago.

“On a platform” sounds unnatural. I would recommend either deleting it or naming the platform.

I'veALSO POSSIBLE: I just finished an online group English speaking class on a platform a few minutes ago. ALSO POSSIBLE: I just finished an online group English speaking class on a platform a few minutes ago.

I've just finished an online group English speaking class on a platform a few minutes ago. I've just finished an online group English speaking class a few minutes ago.

"on a platform" is a bit unnecessary, there's no reason to introduce it if you don't specify what platform.

The teacher not only compressed my speaking time, but also put me last to speak every time. The teacher not only compressed my speaking time, but also put me last to speak every time.

The teacher not only reduced my speaking time, but also put me last to speak every time.

The teacher not only compressed my speaking time, but also putcalled on me last to speak every time. The teacher not only compressed my speaking time, but also called on me last to speak every time.

The teacher not only compressed my speaking time, but also put me lastmakes me to speak last every time. The teacher not only compressed my speaking time, but also makes me to speak last every time.

The teacher not only compressed mygave me less speaking time, but also put me last to speak than average, but also called on me last every time. The teacher not only gave me less speaking time than average, but also called on me last every time.

“Put me last to speak” sounds like he made a written schedule and your speaking slot was last.

The teacher not only compresslimited my speaking time, but also put me last to speak every time. The teacher not only limited my speaking time, but also put me last to speak every time.

OPTION A: The teacher not only compressedut my speaking time down, but also putcalled me last to speak every timeduring discussions. OPTION B: The teacher not only cut me off when speaking, but consistently called me last to speak . OPTION A: The teacher not only cut my speaking time down, but also called me last to speak during discussions. OPTION B: The teacher not only cut me off when speaking, but consistently called me last to speak .

OPTION B is smoother, but OPTION A is also possible.

The teacher not only compressed my speaking time, but also put me last to speak every time. The teacher not only compressed my speaking time, but also put me last to speak every time.

I'm certain it wasn't personal since it was our first meeting. I'm certain it wasn't personal since it was our first meeting.

I'm certain it wasn't personal since it was ourthe first meetingtime we’d met. I'm certain it wasn't personal since it was the first time we’d met.

I'mALSO POSSIBLE: I feel certain it wasn't personal since it was our first meeting. ALSO POSSIBLE: I feel certain it wasn't personal since it was our first meeting.

I'm certain it wasn't personal since ithis was ourthe first meetingtime I was in this teacher's class. I'm certain it wasn't personal since this was the first time I was in this teacher's class.

So probably, I met a racist. So probably, I met a racist.

So I probably met a racist.

So I probably, I met a racist. So I probably met a racist.

So I probably, I met a racist. So I probably met a racist.

More natural

So I probably, I met a racist. So I probably met a racist.

So i probably, I met a racist. So i probably met a racist.

Based on your grammar and level, I'm sure the teacher thought you were better than the other students and was pushing for them to have an opportunity.

So probably, I met aMOOTHER: Probably the teacher was racist. ALSO POSSIBLE: Perhaps the teacher was racist.? SMOOTHER: Probably the teacher was racist. ALSO POSSIBLE: Perhaps the teacher was racist?

So I've probably, I met ran into a racist. So I've probably ran into a racist.

So I probably met a racist 可以, this word order is better

I'm going to jog and if I'm still angry after that, I will file an online complaint against that teacher. I'm going to jog and if I'm still angry after that, I will file an online complaint against that teacher.

I'm going to go for a job and if I'm still angry after that, I will file an online complaint against that teacher.

I'm going tofor a jog and if I'm still angry after that, I will file an online complaint against that teacher. I'm going for a jog and if I'm still angry after that, I will file an online complaint against that teacher.

I'm going (out) to jog and if I'm still angry after that, I will file an online complaint against that teacher. I'm going (out) to jog and if I'm still angry after that, I will file an online complaint against that teacher.

也有可能: I'm going to jog and if I'm still feel angry after that, I will file an online complaint against that teacher. 也有可能: I'm going to jog and if still feel angry after that, I will file an online complaint against that teacher.

I'm going to jog now and if I'm still angry after that, I will file an online complaint against that teacher. I'm going to jog now and if I'm still angry after that, I will file an online complaint against that teacher.

It's disgusting to pay for a class and have this happen to you. It's disgusting to pay for a class and have this happen to you.

It's disgustannoying to pay for a class and have this happen to you. It's annoying to pay for a class and have this happen to you.

Or annoying

It's disgusting to pay for a class and have this happen to you. It's disgusting to pay for a class and have this happen to you.

I'm sorry to hear that, i hope you get to make the most of your money's worth! Language classes are expensive.