I didn't play table tennis inat the gym today. I didn't play table tennis at the gym today.

It' was very hot today. It was very hot today.

We finished lunch around 2 pm. We finished lunch around 2 pm.

AndI then I dropped a classmate off at his homuse before I wentreturning home. I then dropped a classmate off at his house before returning home.

And tThen, I dropped a classmate off at his home before I went home. Then, I dropped a classmate off at his home before I went home.

I had a rested on my bed and then fell asleep. I rested on my bed and then fell asleep.

I had a rested on my bed and fell asleep shortly after. I rested on my bed and fell asleep shortly after.

I usually play table tennis (?Everyday?) from Monday to Friday. I usually play table tennis (?Everyday?) from Monday to Friday.

You need to clarify how often you play where I've denoted (?). Your current sentence is quite ambiguous, I'm assuming you mean "I usually play table tennis everyday from Monday to Friday."?

When it was about 5:30 pm, the time when I usually go to the gym to play table tennis, I felt a little tired, so I didn't go to play table tennis. When it was about 5:30 pm, the time when I usually go to the gym to play table tennis, I felt a little tired, so I didn't go to play table tennis.

Amazing Job! This is a complex sentence that makes sense and flows well.

When it was abroutnd 5:30 pm, the time when I usuallyI felt tired and didn't go to the gym to play table tennis, I felt a little tired, so I didn't go to play table tennis. as usual. When it was around 5:30 pm, I felt tired and didn't go to the gym to play table tennis as usual.

I guess I wi'll go to play table tennis tomorrow evening. I guess I'll go play table tennis tomorrow evening.

'I suppose' sounds more fluent than 'I guess', however, both are correct.