Cooking videos only get you so far. The third burnt grilled cheese teaches the rest.

Watching gives you the plan; your hands have to learn the heat, and that only happens by getting it wrong a few times. The burnt ones are not failed dinners, they are calibration: too hot, too long, pan not ready. No video can hand that over, because it lives in your timing rather than in the instructions.

Make the same simple thing three evenings running and change one setting each time. Lower heat, more butter, a lid on. The third one will be good and you will know why.