If I may make a suggestion: Hardened Firefox via arkenfox user.js. Changes are being applied to your profile via the file "user.js" in your Firefox profile folder and you can override any general defaults from arkenfox via "the user-overrides.js", which I have used myself.
The learning curve might be steep for any newcomers, but it's worth it in my opinion. You definitely should go through the readme and the options yourself once and find out through trial and error what suits your needs.
In general, nothing beats Firefox in terms of customization options. I have created multiple Firefox profiles for several purposes.
Vivaldi is fine too, if I just want to quickly do something on sites of official/reputable services that fail on me otherwise.
#software #privacy