I have anxiety the whole night that i cant sleep 🥲

I feel your pain. I didnt get any sleep last night and now I'm at work :(

Try a small of rum about an hour before you go to bed.

Loosing sleep really ruins me, sometimes if I work hard physically I sleep better.

What relaxes you?

Deep breathing exercises help.

There is plenty of guidance online.

a shower usually helps me..

I get that sometimes. I find getting out of bed and stretching everything as hard and far as you can go makes you yawn. Arms, legs, fingers, toes, back, neck...it only takes 2 mins and you can even do it in bed. I do it and yawn and repeat if necessary and most of the time I fall asleep.