On desktop I use Mercury Browser - a Firefox fork - but I'm not sure how " privacy focused " it is other than that it's Firefox based
On Android I use Brave Browser , because it meets my needs , while it was good compared to other browsers in privacy tests , I still won't recommend it 100% for privacy for the following reason ( unless you're ok with changing some settings to make it more private ) :
If you care about your privacy , you can read this browser check series for both desktop and mobile ( in German , you might need a translator ) by security expert Kuketz , the rest of the browsers are linked in the same page
Unfortunately it won't work , everybody I know run apps that isn't available on Linux. .. I know alternatives exist but it's not enough for everybody , especially college students who are training on important apps in their feilds.
If you don't have a specific interest and/or lack the skill of finding new content that you like , RSS mostly won't help you unless it has a " suggestion " feature , while on ActivityPub ( or any other social media ) you can find new content that might or might not suit you just by browsing
When I was testing Linux distributions on DistroSea it was pretty funny to me to see " Activate Windows " lines on the screen while testing a Linux distro
Chromium based browser