I did not uninstall it, played a Steam game recently. I get this when I try to open it. I typed it in Pacman, it is there, .steam is in my /home. Sorry, it isn’t, hmmm.
I don’t use steam, and I have no idea what happened. 
However steam-runtime is owned by steam, so a reinstall should fix it. 
sudo pacman -S steam
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Not sure how, but the native runtime was not there. I did not uninstall it, sorry usless topic. I installed the native runtime, seems good now.
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