Alt+F4 should do the trick
Leaving a Zoom meeting isn’t the hardest thing in the world. In fact, there’s a Leave Meeting button written in clear English. But for some reason, no matter how many times you’ve used Zoom, there’s always at least one person who can’t figure out how to exit the meeting.

It gets even more awkward when the other person asks how to leave the room in the chat box. If you’re on your computer, just Alt+F4 your way out. If you’re on a phone, just reboot it. If you can’t do either, then maybe you should avoid Zoom meetings from now on.