My top android apps are : 1.Local send for file transfer 2.Bitwarden for password manager 3. Antennapod for my podcast 4.Seal for YouTube download 5.Boost for lemmy 6.Rimusic for YouTube music 7. Poweramp for local music on my phone 8.Lichess for chess 9.protonvpn for vpn 10.fairmail for email
Honorable mentions to Newpipe and Termux.
Firefox is absolutely horrendous on mobile. A lot of websites don’t render properly, or when scrolling everything jumps around. Browsing Facebook is especially bad. Also UX is a lot worse than competing browsers.
The only browser that supports proper extensions such as Ublock origin (which is much more advanced than the built-in adblockers in other browsers).
I disagree about the UX but that is probably just my preference. I use Facebook marketplace sometimes and it seems fully functional, no jumping around or whatever. Every now and then I have to use desktop mode but only on like government sites. Maybe it’s because I use an ad blocker that I don’t notice the problems you report.