I switched to LibreWolf, which is a Firefox fork that prioritizes anonymity and privacy. I like it, but there are definite quirks:
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it will tell every website your time zone is UTC+0, which breaks some stuff. Proton Calendar works if you tell it your actual timezone.
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no password saving and cookies delete every session, so you have to log in to every website every time you restart. This is intentional but I don’t understand the rationale. You can install a password manager though and self-host it if you want.
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because your device fingerprint is generic, a lot of websites incorrectly assume you are a not. I have to use FF for GrubHub, for instance, as they won’t play nice with LibreWolf due to restrictions on the HTML5 Canvas element, for instance.
Adblock was purchased by Google years ago and now allows “non-intrusive” (is Google) ads by default. Use uBlock if you can.