God I wish chrome didn't remove manifest v2 
Here is the list of things that piss me off about firefox:
- It is dogshit slow
- It eats up a ludicrous amounts of RAM, which I wasn't expecting since it's one of the main things people make fun of chrome for
- It crashes constantly
- It tries to push it's "AI" bullshit on me despite me turning it off on multiple occasions
- It puts ads on my home page
- It needs to be relaunched regularly because at some point it becomes too laggy to use. It even stops loading pages altogether
- "Restore previous session" feature doesn't work half the time so restarting the browser is absolutely terrifying
- Profile management is a mess
Are there any alternatives? Is Brave any good?
CleanURL's is unnecessary if you have uBlock Origin installed:
https://github.com/gorhill/uBlock/wiki/Static-filter-syntax#removeparam
Same thing with I still don't care about cookies. Use the two default Cookie Notice filters in UBO.
For the Google tracking you can use Multi-Account Containers, but that's an upgrade rather than a replacement.
I'm pretty sure a few of the Twitch ones can be solved with Tapermonkey and various scripts, but don't quote me as I don't use Twitch.
Just remember - the more extensions you install the easier it is to track you.