On Firefox you have mostly the same basic no-ads no-tracks features of Brave browser while also enjoying the amount of addons Firefox has.

For example a basic Firefox setup, without even touching the user.js file, would have strict blocking by default and containers active plus few addons such as

I mean both can do the same job but Firefox has the advantage of being a less bloated browser. This is especially true if you switch to LibreWolf which is firefox but harden on security and privacy