Oh hey there again. I feel like I've quoted you before.
Maybe it's just me, but I feel like this is a very negative outlook on people. While there's a minority that do this (as far as I know, this is not common and those that do that are few and far between or are doing it just to do two things at once). As for the duty finder, this is a thing that many people have discussed in the past and said that this is a far better way to do it than it used to be done. And if you don't want that, PF is still there to offer itself. Would it be more efficient if you are looking for efficiency? absolutely not. Which is why it's perfect for finding like-minded people! (also, I notice you aren't a native english speaker, it's more proper to say "you or I" than you or me ^^)
This is puts a lot of blame on the wrong places. If what you were saying is true, then it's not the players and the game to blame it's the games outside of this one. Where 90% of the games have become "live services" and more of a grind and providing less difficulty. It's a very nuanced situation you have drawn upon to say this as a reason. There's more to it than just "people don't play games" or "game is designed bad". Instead of placing a lot of blame on both, the point is missed and blame should be placed in many places instead.
I'm confused... are you saying we should blame Duty Finder for creating this enviroment or not? Or do you possibly mean Party Finder? That being said, I get this problem. It's why I like to try to engage in conversation whenever I get the chance to help people, to make their days a little better, or even to make the atmosphere of the game a little less quiet.
Now, to address the OP. Don't worry too much if you don't make "friends". If you need someone to talk to maybe a less high-level FC would be better for you. What I've found is that just generally being kind, finding the right FC, and other stuff and finding one that fits what you like is pretty hard at times. Making "friends" can be even harder. So what I like to do is instead of trying to just make friends is just trying to be me. When I'm me and just go into places and I act kind I'll find people I like and generally just have laughs. I met one of my best friends just going into Labrynth of the Ancients and having a good time! Sometimes, you just find people and going out of your way to search is a lot harder than just relaxing. Maybe that's just me though.