On the keyboard i use F3 all the time, I almost never alt-tab. When I'm on my macbook and have access to the track pad i of course do three-fingers up for it.
I also use cmd + 1 (2, 3, 4, 5 ...) to change workspaces. I have all my chats (telegram, discord and signal) on desktop 1, general web browsing on desktop 2, coding related stuff on desktop 3 and music on desktop 4. So changing between these quickly is really important.
Other than that, I don't really use any other shortcuts.
