Ubuntu touch project runs linux on a tablet while retaining the phone/android functionality
https://en.wikipedia.org/wiki/Ubuntu_Touch
https://docs.ubports.com/en/latest/userguide/install.html
https://liliputing.com/ubuntu-touch-mobile-linux-distro-is-now-based-on-ubuntu-24-04-lts/
There’s a list of supported devices there. Lenovo was one




KDE is not a Mint supported DE and the KDE files are not in the Mint repos.
This can be made to work if you’re experienced but is definitely not a good idea for beginners. It will eventually break, and dependency hell is a thing.
For a KDE option suitable fir beginners, Fedora offers KDE as does Ubuntu, or there’s KDE Neon