I am currently on the nothing OS 2.0.1 and new versions have already came out.

I am still on android 13 and want to update.

I can’t do a google play security update either.

what do i have to do just to update everything.

BTW every time i try to update it fails

Did you try to sideload the updates ? You can start by upgrading to android 14 / nothing OS 2.5 and upgrade to the latests incremental version.