I played basketball today. It was hot.
After that，I went to library and do my homework. Also, I went to hair salon to get my hair cut.

あくまで参考程度にお使いください。

today, It was hot when I played basketball,after that, I went to the library to do home work.And I went to a beauty
shop to cut the hair.
こんな感じでいいと思います。少し手直しして英文にしたため日本語訳するとMaiさんの英文と違う表現かも知れませんが意味は同じですから御安心ください。

It was hot today because I played basketball. After that, I went to the library and did my homework. Then I went to the beauty salon and cut my hair.
こんな感じはどうでしょう？少し機械的に訳しすぎですかね💦