Do you know you can opt out of the crypto crap? Do you also know that most of Firefox’s revenue comes from google? I would prefer a browser makes money off their own crypto than one that depends on another big tech.

Brave is better than Firefox though. Firefox defaults to the Google search engine and shows me sponsored ads. Brave does not do that, except the sponsored wallpapers. Oddly enough, your claim is not backed by anything.

No, go use Google Chrome like everyone else.

It is really hard to say, I am using brave and have none of these issues on GNU/Linux. Brave is FOSS, has a built in adblocker, Tor private mode, fast, and brave shields. I prefer it over Firefox, because Firefox went down a path I did not like. I might switch to librewolf of GNU icecat someday.