Tell me about it. The newer Android Firefox UX is so bad I'm forced to stay on version 68. I can't use other browsers since extensions are core to my web browsing experience (especially userscript managers). Maybe once a year I'll try out the latest version to see if they've ironed out some of the problems.
I was willing to give it more time on Android, but it would randomly stop loading pages and that was the last straw. I begrudgingly use Chrome now :/