updates:
- at first I installed bottles trough linuxmint 20.2 software manager with a flatpak. It froze the whole PC while trying to run a windows executable.
- then I installed the deb, same results.
- then I tried in an ubuntu 21.10 install, no flatpak there, so tried with the deb, same result.
- As apparently it originally was an elementaryos thing, tried it there with a flatpak install from the flathub, as it wasn't in the software manager. I was able to install winrar, and it worked flawlessly. Could not try it with a game because my test elementaryos 6 installation didn't have enough space.
- went back to linuxmint and tried a cli flatpak install, still freezing.
- so finally tried the appimage way (I was hesitant before because I have recently read about security concerns). It worked, allowing to install winrar and run it.
Now I am going to try with a game.