#1) Online dating is shit. It has NOTHING to do with reality.

#2) And in the rare case when you finally meet someone in person, it often doesn’t work out because of #1. You might as well just randomly put two people together and you’ll get almost the same result.

So you multiple these two improbability’s together, you get the main explanation for why dating is difficult.

All these explanations you give are obvious to a lot / most people and they are already doing it.