I will use Firefox until the day it completely stops existing. You can pry it from my cold, dead hands. In regards to search engines, I’m using Startpage these days. I am actively looking around for something else that is free as in beer, useful, and reliable. I want to set and forget it, not constantly manage it because the instance I use is down or something.
Like the other poster said, Mull is a fork of Firefox for Android that includes tweaks from the Arkenfox user.js.
It’s possible but will never be 100%. O&O Shutup is a good start. Just be careful with it. Do just the recommended settings and revert anything that breaks as you go.
You could try the F-droid repo for development versions of Shelter. Maybe this version would work better.
This test might be worth trying.
I see you recommend Mulch instead of Bromite. Have you considered Cromite?
I’ve heard good things about Photopea.
ETA: No idea about privacy, etc.
Edit2: I’ve been informed it’s not free software. Leaving it here for anyone that might find it useful, though.
There is a fork of Bromite, called Cromite, if you’re interested.
Just adding Simple Keyboard here as well. It has no features besides typing. It’s literally just a keyboard. Been using it for a bit and like it, but it won’t be for everyone.
Nice. Didn’t see it while I was checking.