Changed the screen resolution, wont return to original

Hi, i was changing my screen resolution and i made a mistake and choose a resolution that my screen doesnt support, i waited the 15 seconds to return to the normal and nothing happened. I cant seem to set it back to the original.
Appreciate the help!

Turn off your Mac holding the Power button. Then, turn it on and press Command, Alt, P and R keys while your Mac mini is starting, so you will do a PRAM reset. This will reset the screen resolution, so the display should be working

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