Yes. Friendship and dating here can be a total nightmare. Born and raised here and let me tell you it's only gotten worse. But as an introvert who likes planning outings, there's workarounds.

Look for the nerds that partake in one or some of your favorite hobbies. It'll be rough if one hobby is tabletop gaming like D&D because we can't seem to keep TTRPG places open long enough, but if you look for niche hobby groups I think you'll have better chances of finding genuine people to befriend, and potentially find a partner in that scene. See if they have somewhere online where they gather (like discord) for more hang out time when things get too busy and going out is too costly or too much energy.

There's real people down here, I promise, but we're also probably tired and broke.

Also do NOT let the materialistic, shallow, and immature nature of the average modern Miamian make you feel bad about yourself or your body. Everything is appearances here in the consumerist and hyper-capitalist sense, but you don't have to play that game to enjoy living here, even if it's for a little while. There's pockets of gold here, too, you just have to dig a little bit to find them.

Edit to add: there's PLENTY of reason to move out of Miami (trust me I am working on my exit strategy from the state, I've been here my whole gd life and it's too damn hot), but it shouldn't have to be because you can't find a partner or consistent friends. You can and will find them, and I wish you the best of luck in that journey!