Just try it out. You can’t do it wrong.

You can select the folder. It recognizes the installed versions. You can even install it in steam.

I use https://davidotek.github.io/protonup-qt/ to manage my wine versions in lutris.

You mean you are using debian and didn’t know it.

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You never know if the other people are as consiuos as you and nobody can prove it. It is possible that you are the only one in the universe with a consious mind.