I use firefox cause fuck chrome. We went through this shit in the early 00s where one company dominated the web, and extended it in fucked up ways to their benefit, while lagging on development cause they didn't have to do anything.
I've used firefox since before it was firefox, and it always works sufficiently well. I don't agree with all their decisions, especially lately, but it's still better than the monoculture of chrome.
Btw, setting xpinstall.signatures.required to false fixed fennec-fdroid on android, the latest fx on xubuntu, and 60.6.1esr on debian.