I personally use firefox for pretty much all my standard browsing, since unlike chrome it isn't straight-up spyware, and can be configured to be reasonably secure and private. Having a fully functional ublock origin (instead of the neutered version with manifest v3) is basically mandatory for me to browse the internet at this point. I also consider it rather important to support mozilla to play my (infinitesimally minor) part in reducing the effects of google's monopoly. Also, in terms of having even the slightest hope of partially thwarting any fingerprinting beyond the most naive scripts, firefox's "strict" enhanced tracking protection probably has the largest herd outside of using tor browser. That being said, the sad truth is that nowadays tor browser is the absolute bare minimum to have even the slightest sembalance of privacy or anonymity (since without a large enough herd, even proper anti-fingerprinting measures are ineffective against non-naive fingerprinting).
I am occasionally forced to use a chromium browser like brave, since some web developers are too lazy to make their websites fucntional on anything but chrome. Also, firefox does have a few annoying limitations, such as not properly supporting hdr yet. Brave's built in shields are a bit mediocre imo though, especially when it comes to more granular filtering.
With regards to the firefox tos update mentioned earlier in the thread, firefox later backpedaled and changed the wording, I'd recommend reading their response for yourself.