For anyone single over 30 do you feel you should’ve found someone in your 20s or school?

Im 36 m single. I'm trying to figure out why dating is so hard for me and its bc everyone at work is married or not looking for anyone ( at least in my case.) I look back at school and my 20s and think thats when I should've figured that out when everyone was single. People that found someone in their 20s aren't worried about finding anyone anymore. I don't know if I'm making this up in my head or if this is somewhat true.