I just had a application that totally locked up. It didn't lock of the Mac up but I could not shut it down. In order to close it I had to reboot the Mac Studio. On my Windows machine I would have hit the Control-Alt-Delete command and pulled up the task manager and forced the application to close. Does macOS have something like that? As you know the on off button on the Mac Studio is a complete, and total PIA. Sort of on the back flush mounted so maybe a blind person used to reading braille might be able to feel for it but I have to turn the thing around to see it.