Is there anyway to deactivate Facebook without logging in

So don't then...

I wanna deactivate it by not logging o.

You need access to your Facebook account in order to deactivate or permanently delete it. If you forgot your login password, Facebook offers several recovery methods aimed at resetting your password and regaining access to your account. Once in, you can close your account temporarily or permanently.

The advice you're askin for is illegal. You can kiss your lovely backside you havent been modded for requesting such advice.

I don't even wanna go back on it feel so ashamed

It will take two seconds and the likeliness that anyone notices you're on is extremely low..

Its either have your profile on there forever or use two minutes online and remove it