Apologies if this is in the category of unsolicited advice. I noticed that you had a submission describing a similar problem set in the work setting, so I am seeing a theme. It sounds like you are in a lonely place and are hoping for something better.
There's no magic to it but I can recommend some things that work very well for me.
First, do you have a curiosity about people? The folks you're working with, or folks at your volunteering events - do you strike up a conversation? Do you know where people are from, what their families are like, what their hobbies are, what they think and worry about? I don't mean to encourage you to engage in robotic small talk, but asking you whether these things are actually of interest to you? Wanting to know someone is the first step of a relationship.
Assuming you have the interest, ask whether you've done anything to learn these things? If you realize that there are 30 people you could have known these things about but don't - why not? Are you very shy? Do you think people will think you're rude? Do you not know how to chat? Answer this for yourself and seek resources on-line for how to close those gaps. I went from a shy mush-mouth to a pretty good shmoozer in a few years, it's possible.
If you decide that you actually don't have an interest in people (like, you genuinely don't care what anyone's life is like) then there's a strong disconnect between than and the desire to have a family/kids/friendship. If you have the ability to, seek some sort of talk therapy to explore this question. Chances are there's some "wound" that's blocking your ability to want to connect with people if this is the case.
Finally, you sound like someone who closes doors before they are even open. I suspect when you say "hookup culture..." what you are really saying is "I have a reason for why I am not on dating apps." When you say "people treat me like I am invisible" - you are writing off an entire town as not being interested in you, which gives you an excuse to not try to connect with them (yet, somehow they had all met each other - so it's probably your vibes - and that's in your control to change). If you really believe that your location is a problem that's preventing you from having relationships, then move. If you have a desire for family and kids and you think that's not possible in your location, why are you there? (and, if you are about to give yourself an excuse as to why that's impossible, pay attention to that too)