I use a little MacOS app called rcmd for app switching (no dock, no Cmd-Tabbing, no “interface” – it’s great for screencasting videos!).
But it’s kinda expensive for what it does (I’m sure it was cheaper when I bought it!)
But someone I know has now made a free tool that’s similar.
Check both out if you’re a MacOS keyboard ninja:
https://apps.apple.com/gb/app/rcmd-app-switcher/id1596283165?mt=12