영어 잘하는 애들아ㅃㄹㅃㄹㅃㄹㅃㄹ

The club I joined is a health club and there are 20 people.

The reason why I joined this club is because my dream is to be a nurse.

I learned various nursing knowledge in the club.

And I knew what the nurse was doing,

Finally, we made a hand sanitizer together.

여기서 잘못된 문법 있음??