Either use Firefox on Android or give up. For desktop, you have at least Firefox, Otter Browser, and Epiphany as options.
Now as a reply to this specific comment, I've tried Firefox multiple times on Android and always hated it. So I obviously can't advocate people use something I hate. But I do wish there were more...options.
I really try to support everything that exists, especially non-Chrome.
And yet, I am not excited to download Otter Browser. Its website and SourceForge (i.e. the very fact they're using Sourceforge) do not inspire confidence that they're not modern and up-to-date enough to actually be safe to even use (browser attack surface is massive). Am I wrong in translating this first impression to a judgement on safety?