My good friend @janethemotherfucker recently nudged me to try out LibreWolf, and I must say, I rather like it:
I built it from source on my Debian Bookworm machine, which was somewhat inconvenient; for example, I also had to manually updated rustc/cargo.
I must say again, I do quite like LibreWolf. It's basically Firefox but with all the telemetry/spyware crap removed, and with lots of security hardening enabled by default.
It also comes with Ublock Origin by default.