Linux Mint will be slowing down how often it releases its namesake distro. We'll still see the next distro not long after Ubuntu 26.04 appears.
This process is called a clean install, which is ironic as there's nothing particularly clean about it: Microsoft has enshittified Windows Setup.
Put your old gaming PC to use ...
These distros are easy to install, include the right apps, skip the bloat and ads, and automatically detect your hardware.