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?
Base Firefox is pretty terrible but with the right addons you can turn it into whatever you want. I'm more privacy focused so all my stuff is aimed at that. Definitely look up something like arkenfox (https://github.com/arkenfox/user.js) to get a sense of all the bullshit options you need to turn off.
Someone else mentioned Librewolf but there's also Palemoon:
https://www.palemoon.org/
and Orion by the Kagi people:
https://kagi.com/orion/
Brave is dogshit for privacy. If you need recommendations on addons feel free to ask. Definitely start with uBlock Origin. Its legitimately the best thing on the internet.
Librewolf is really the safest bet.
It's the least divergent from firefox such that you're not going to have issues with websites not working etc like Palemoon (whose developers are also pretty sus).
And if a browser made by Kagi isn't already pushing AI even harder than firefox then it's only a matter of time until it is.
Well, at this point EVERYTHING is pushing AI, so I honestly wouldn't use that as a barometer of whether or not the browser was any good.
It is something the op specifically wanted to avoid and is not present in librewolf.
In general I would advise any community driven project over one by Kagi who are a petite google.
No disagreement there. Still worth pointing out as he's looking for a better experience on his equipment which a non-firefox browser might provide.