That depends on your usecase. Granted this isn't a comprehensive list. One of these, oe none of these may be best for you.
However if you are looking for a reasonably secure and private Linux distro.
Here are 12 These Linux Distributions that have a decent track record for being somewhat trustworthy. Just remember to always verify, because software like the ocean never stays still, or safe forever.
Debian (Cinnamon Edition is most like Mint)
OpenSUSE - MicroOS
Trisquel
Parabola
Alma Linux
PopOS
Void Linux
Alpine Linux
Ubuntu
Qubes
Tails
Try each one of them out in a virtual machine firsr if you can. Use virtualbox, gnome boxes, or virt-manager. They offer many different desktop environments too.
Just remember It is like trying on shoes. See which Linux distro above has the best fit and feels most comfortable for you. If anyone thinks I have missed one, please let me know.