There are many good reasons for this, such as for instance abnormal working hours, not enough social discussion an such like.
What stops most men (and even women) from increasing their likelihood of finding a good partner is actually gullibility and ignorance. https://Omsk.media/engine/dude/index/leech_out.php?a:aHR0cHM6Ly8zM1Bva2VyLm5ldC8