You have done well and you are clever. If you aren't in shape, see about getting into shape. That involves intelligent eating and moving. Or course you aren't a machine, but using an analogy, put in good fuel, and operate your body the way you would a good quality machine. So interest yourself a little in nutrition and fitness, without making the fetish out of them that some people do.

I would suggest you really value what you have: youth, brains, innocence, courage, originality.

I am not much in favor of your getting around the wrong people as that can get you robbed and Herpes. You don't need either.

If you start to look better and more muscular, the right woman will come along for you.

Getting strong will cheer you up.

There are lots of how-to videos on YouTube about how to get physical, make things, build things, lift weights, and on and on. You can google "nutrition" and get some basic knowledge.

You don't have to be the great socializer; just a few of the right people around you will be fine.

The last six years were just adolescence; the next six won't be the same.

I would say to get a slight beard.

It's one thing to confide in Reddit; it's anonymous, but don't go telling real people that you have money. They might like you for that or try to get it out of you.

It isn't useless to learn how to cook nicely and set a dinner on the table for yourself. Don't be eating out of the can over the sink. Treat yourself nicer than that.

I would say to give yourself permission to move slowly and carefully for the coming year. Make a date with yourself for a year from now to assess progress. But you get a year "off" a little to make the transition from clever adolescent to happier grown man. You have the time.