A guide for installing QMPlay2 on Linux Mint 21 or 20 was published by Linux Capable.
How to Install QMPlay2 on Linux Mint 21 or 20
Guide on installing QMPlay2 on Linux Mint 21 or 20 using a third-party supported LaunchPAD PPA for the latest version.
How to Install QMPlay2 on Linux Mint 21 or 20