Comment by Freak_NL

Also with Fennec (rebranded Firefox) from F-Droid and uBlock Origin, ad-blocking isn't really needed at the OS level unless you insist on using apps which feed you ads.

And if you have F-Droid (probably a given if you want more freedom) you can also install OsmAnd~ (note the tilde) from there for the full premium version of OsmAnd.

OpenCamera is really nice on the Pixel when you want to tweak a bunch of settings, but the stock app is fine too for non-demanding snaps on the go. Just put them both under an icon somewhere.