Yes, social phobia and anxiety disorders run in my family. I know how hard it can be. Some days its hard to do simple stuff like go to the supermarket.
However, if i were in ur place i would leave this whole thing as txt flirting and not take it any further for a couple of reasons. A lot of ppl send txt lately fishing for conversation saying its someones old number. Idk what the deal is, apparently its like a trend or something. Some of them are trolls. Anyway, its kinda sketch!
I know its hard to meet ppl in person, ESPECIALLY approach them. But even though this might sound stupid, things like Grindr really helped me. You make of the app what u want. If u want to look for something serious, just to meet ppl, anything. Its a great first step to chat w ppl. However, at the same time its important not to take it personally bc there are a ton of assholes (90%) there. But if u just use it as a tool to practice to talk to ppl and maybe even start virtual flirting, its pretty useful!
Also, I wanna add that my anxiety, luckily, hasnt really hindered my personal relationships too much, but my sister has suffered a lot. Her medication helped her a TON! I dont know if u take any, but I highly recommend it if u dont. It will really douse the anxiety and allow u to REALLY be yourself.
Hope this helps! Best of luck!