I am starting to use a RSS feed (Akregator). I intend to use it to follow youtube channels, and try to learn what else it can do. What kind of privacy issues should I be aware of? Are there settings I can use to improve privacy? I use a vpn, is there something else I should do?

Using Mullvad on Linux Mint, I see a number of settings and have no idea what they are for. DAITA, Multihop, Local Network Sharing, API Access. I would like to keep Mullvad VPN on all the time, but still be able to use Freetube and Grayjay. Also not break too many websites, although that seems to be more of a Librewolf setting issue. Can anyone recommend settings for Mullvad that I should be using?