I live a bit south of San Antonio. DM me if you want to meet up sometime.

I would learn how to appreciate yourself and your time, first, before you try reaching out. You don't want your happiness to be dependent upon others, especially in situations like these.
This is just advice, really, not a rule of thumb. I was in your situation before, and once I got some friends... Realized they weren't really the type of people I wanted to be around, that I was just being desperate for some kind of social activity. Learn about yourself, then perhaps look up some online forums, such as here, where you can meet fun like-minded people to chat with online, by either text or voice calls.
It really does help!
I wish you the absolute best, stranger! Take care and hold your head up high! Both figuratively and literally, haha!

I'm a loner by nature, so it doesn't bother me, but blind people have a strong online presence. For example, if you use Facebook, you can find all kinds of blind people from all over the world and especially USA in a group called Blind Pen Pals. There are other places too.

Dog bars. They are mostly indoor/outdoor spaces so they haven’t been severely impacted by the pandemic and chatting up a dog owner that takes their pooch out is a great way to get insight on what areas of a city are pedestrian friendly. Plus we love talking about our furry friends and their ridiculous antics to anyone who will listen. Now transport in a small town can be tricky, but it may be worth the cost of a cab/Uber/train/bribing a family member/whatever if you’re really feeling down about the lack of in person social interaction. Plus you’ve got to figure out where you’re going to live when you’re ready to be on your own and I personally feel that the best way to do that is to explore in person and see what neighborhoods will provide you with the lifestyle you want. Some people want nightlife, others, like me, just want a friendly cafe to sit and chat or people watch plus lots of good food around.
The WeWALK app is pricey but I love it for going less/unfamiliar places because explore mode will let me know what’s around and it gives better walking directions between bus transfers than Google Maps.
You said you lost most of your vision. Do you still have enough to navigate your neighborhood safely without assistance? I can still see cars and people (when they move or are close). You could always look for a neighbor in the front yard and just go say hello. The Nextdoor app could allow you to connect with people nearby that could have good local information about how to get around. In a city of 82,000 people I doubt you’re the only one with sight issues that prevent driving. I’ve even had neighbors offer me rides through the app after asking folks to pay more attention to pedestrians in the area. (I almost got run over 3 different times in 2 weeks because of drivers not looking right before hitting the gas and I started walking while they couldn’t cross the street but didn’t finish before traffic opened up. I now have a whistle I blow to let them know I’m there before I cross. And I know, it’s not the “proper” way to cross an interrupted sidewalk, but it takes me long enough to get places without waiting 10 minutes for a parking lot entrance to clear when state law says I have the right of way once I stick my cane out.)

Depending on what kind of person you are, the things other people have said might work really well. If you're more of a people person, and that's me, then you just need to get hold of the situation and find ways and means to go have a life. Getting some cane technique down is really important but it's not the ends of invention. I bet you can probably figure out ways to go do stuff now. Even if it's expensive, things like booking cabs or ubers or whatever you have can get you places. It's just an organisational thing, to make sure there's someone to meet you at unfamiliar places. Nobody likes doing this stuff but if it's that or be in the situation you're in now, well, that's an easy choice.

Don't do anything that's likely to be unsafe but don't sit around waiting for magical O and M to solve it all - you need to be enterprising about this and you can start that right now.

Can you not get out. I was stuck at home at one point. At the time at school and in my dorms. I didn’t go anywhere for a year and a half. Felt trapped and depressed. I said well why am I doing this why not go get out and do it anyway. No one is going to show you, but what are you doing here. When will you get out? What are you going to do about it? About how you feel. So I did. And I don’t regret it.

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Online communities really help. Happy to know that /r/Blind has made a Discord server, you may consider checking that out.