On my M1 MacBook Air with MacOS 12 it hangs. The mouse pointer still moves, but I can't bring up the force quit dialogue, and couldn't get anything else to work

On my M1 MacBook Air with MacOS 12 it hangs. The mouse pointer still moves, but I can't bring up the force quit dialogue, and couldn't get anything else to work either. A youtube video in another tab kept playing until I held the power button to force a shutdown.