This is the best browser rating live article I've found over the years,
https://digdeeper.neocities.org/ghost/browsers.html
Other than tor-browser, (ice-cat + noscript-legacy + librejs + ublock-origin ) no-dbus running, ipv6 disabled anywhere you can shut it off, and run it in firejail to complete the task. Also creating different users and run it on firejail as different user for different browsing is even better. For everything else (browsing without loging into any accounts) just firejail and use one of the fluffy alternatives, like waterfox, brave, vivaldi, etc. Like looking up recipes etc. Or for videos solutions such as: (firejail freetube
https://youtu.be/OTrJwUdK5cM)
Peace