Hi! I have the same problem on my Mac. I tried to follow your instructions but the terminal response is: "zsh: no such file or directory: /Applications/Arduino".
There are two "Applications" directories: one "/Applications" and the other: " /Users/my_username/Applications". Arduino IDE.app is in the first one as all other apps. However, launching IDE from terminal I get the same error.
On the same lan my laptop Arduino IDE (same version) works. I have deleted and redownloaded everything possible with no result!
It probably doesn't count but it happened after a test on Blynk. I got punished!
I would like to continue using the Arduino IDE... Thanks for the help!