I only know you can’t start Docker Desktop. If you knew “why”, you wouldn’t have asked for help probably, so it is not what we expect from you. To be honest, when I wrote my previous post, it was very late and I was i a hurry. Strangely I didn’t notice “MacBook” in the title and in the content… I just saw you can’t open Docker.
Check this topic, please: Docker Desktop not visible - #11 by rimelek
If you had previous issues that you solved and only after that you got this one, try restarting your Mac.
If you just installed Docker Desktop, and you never had any other issues, but Docker Desktop could not start when you first installed Docker Desktop (so you never had Docker Desktop on your machine), that is probably a different issue.