There's a shortcut on Discord that enables you to switch between guilds easily. It's Ctrl+Alt+Up and Ctrl+Alt+Down.
The problem is that Gnome uses this shortcut for changing workspaces. I have two monitors so I don't use additional workspaces very often so I opened settings and looked for the shortcut so that I can disable it.
I found that apparently the shortcut to switch workspaces up and down is Super+Page Up and Super+Page Down and I couldn't find the Ctrl+Alt+Up or down shortcut anywhere else. It seems almost as if this shortcut isn't possible to change but I'm sure that's not the case, though I have no idea how to do that.
System Settings > Keyboard > Shortcuts > Generalthen modify
Show the window selection screen. You can work out what the action that a shortcut carries out is called by making a custom shortcut using the same binding. It will warn you that you are replacing <name of shortcut>.