For all my folks on android a really good chromium browser would be Cromite which is a fork of Bromite a really good privacy browser. I use it with Kagi as my search engine and it works so well for me.

For FF, I used IronFox for a bit. But it had issues with using alternative search engines as defaults. But it’s still a solid browser.

I recommend using the TOR browser as a heavy security measure and for privacy if you need it the most. Remember to change the defaults to the strictest security measures for the best privacy and protection from Malware (ads) and the works.