I did not use Photoshop particularly long, but I have been using the Affinity Suite both on a pc and a tablet for over a year now and can say it’s definitely quite good. Everything is where you think it should be, the workflow feels very usable with no major learning curve (looking at you, GIMP), and overall the only thing I don’t like about it is its lack of Linux support. I would assume that absolute professionals won’t be able to find everything they like/want, but if you’re reading this, chances are you’re gonna be more than satisfied, if FOSS options don’t quite work for you.
One thing I’ve found to be useful is just having my browser clear all cookies upon closing. It’s initially annoying while you set up all your exceptions for commonly used sites so you don’t need to log in again there every time, but afterwards you don’t need to worry too much, because once you close your browser, all the useless cookies are gone.