I really think a key factor for that is that more and more people tend to be less socially active.
It's not only based on the way you look.
For example, I know a lot of guys who just started gaming as soon as they reached teenage age.
They came home from school and went straight to their computer, on the weekends the same, instead of meeting their peers and just hanging out.
So do they still when coming from work...
They never learnt to flirt or have a healthy social live.
I mean you don't have to, nowadays.
Who needs to have a burger and a movie in the cinema on a Friday night, when you just can order a pizza and watch Netflix all weekend long.
It's up to you, if you stay in your comfort zone or try to make some new experience.
I always found it way more nice to meet a girl when going out than trough dating apps, although you can have a nice date with that, too.
For example, where I live there's some event for free every spring, where they make a skateboarding competition and concerts in the evening on a very nice location.
It's just about having a good time, meeting people and stuff, but there are only the same 100 people every year and I bet there would have been lots more 30 years ago.
People just didn't have the opportunity to get this much entertainment when staying home alone.
This is a big game changer I think.
Nowadays people don't want to risk getting rejected or leaving their comfort zone, so they never even tried and with age, its a lot more difficult to get back in the game.