I´m enjoying to useusing this website.

I arrivreturned from school feeling tired.

"Feeling" expresses the state after arrival, rather than "arrived tired." And it is more natural.

So, I was thinking tof writeing tomorrow, but I realized that lLangcCorrect marks my participation with a green square that I participated.

Added "my participation" for clarity; "LangCorrect" is a name and needs to be capitalized.

I should non’t break the streak.

shouldn’t" is more natural in English.

I´m enjoying to useusing this website.

I arrived home from school tired.

So, I was thinkgoing to write tomorrow, but I realized that langcorrect marks with a green squaredays that I participated with a green square.

I should not break the streak.

This is correct but sounds unnatural. I would say I don't want to break the streak

I´m enjoying to useusing this website.

I arrivreturned from school tired.

"Arrived" is grammatically correct, but "returned" is much more natural English. "Arrived" is more often used when talking about going to a destination that is not home (or otherwise the place currently serving as "home", such as a hotel or dormitory.)

So, I was thinking abouto writeing tomorrow, but I realized that langcorrect marks with a green square that I participated.

I´m enjoying to useusing this website.

Need to use present participle after enjoying.

So, I was thinking abouto writeing tomorrow but I realized that langcorrect marks my participation with a green square that I participated.

I´m enjoy using to use this website.

So, I was thinking tof writeing tomorrow but I realized that langcorrect marks with a green square that I participated days I participated with a green square.