Im trying really hard to sleep but I can’t. I’m supposed close my eyes and count sheep right?

actually you're supposed to count value of i for each iteration in while(++i) i+=i*3; without any notes or a calc

Make your bedroom absolutely calm, and dark

If still not able to sleep, read a book

Close eyes and stop thinking.

If you're anything like me, you're ending up in a vicious cycle where you get frustrated that you're not asleep, so you can't sleep.

Convince yourself that you don't actually need to sleep, and it'll be alright if you don't, and you'll nod off right away. Maybe.