My two cents on some of the stuff mentioned:

Definitely get a password manager. I personally use Bitwarden but feel free to look around.

AlDente works fine until it nearly broke my battery controller. YMMV, but it could be useful

IINA is brilliant, no complaints.

Rectangle is nice to have when you need to have more than two apps on screen at the same time.

For some really cool widgets you can check out Ubersicht.