Steam won't now run

[worthless]

I accidentally uninstalled Steam on Software so I reinstalled but won't open Steam but it's running in System Monitor??

[Storm]

1. Check if you install the right format package (.deb/flatpak)
2. Try delete ~/.steam but make sure your games are installed other place.

[worthless]

Where ~/.steam ? and do I after I uninstalled it? I deleted everything permanently.

[worthless]

I installed it on Software, It's flathub.

[Storm]

It's hidden. When there's a dot infront a file or folder means it's hidden.

Flatpak? try clean it from lefterover and then install Steam. You can do this with an app called flatsweep.

[worthless]

Is it same thing? and say "The packages cache seems to be out of date, Press return to update the list of available packages" should I do it?

[worthless]

I don't know what to choose, offical website or flathub

[SOZA]

I had no problem since years by using and installing steam from Debian / Ubuntu 's repository.
let's see if steam still there by taping this in Terminal
flatpak list --app
then remove the app and data
flatpak uninstall --delete-data <application ID>
you get the ID of the flatpak from the first command
in my case

Then, i recommend you to avoid installing packages from websites ; prefer installing software from APT repository, Flatpak, Snap.
You can "kill" the app from "system monitor".
then install it from Zorin Terminal
sudo apt install steam-installer
type your password.
Done