How to reset display settings on macOS Ventura to their defaults?

I've been experimenting with external display on my MacBook Air. I had the external display set up as a primary monitor and my Mac's built-in display as a secondary. Then for some unknown reason the external monitor stopped working. It just sits there saying "no signal" but my Mac display stays as a secondary screen. In this case I can't do anything as all the windows remain in the external monitor that is not showing. When I unplug the external monitor the Display settings change, so I can't revert anything: So my question - where do they store current display settings? Or, how do I reset them to their defaults? (I just want to say that this is such a stupid UI if someone has to ask this on a public forum.)