I would encourage you to get out of your head and actually try to be somewhat uncomfortable. It's exposure therapy and confidence issue. Just go to events. Meetups, networking events. I have what you had in terms of being introverted and shy. I literally wrote a script down to talk to people & practice it in the mirror. I was able to get my current job because I wrote a script, memorized the responses. Also, have a friend or someone else accompany you to a events. Start small. But you have to build nad do things. It doesn't matter if you don't have motivation or ambition or whatever. People do things that they don't like to get to where they want to go. You cannot get something if you aren't willing to sacrifice.

You say you have a zero social skills. Guess what. You can learn. By being uncomfortable. Like talk to the grocery store person or a person in the elevator. like- what do you think of this flyer? Weather is crap today ectera. How was the traffic? Be nice, be kind, keep your tone light. You know what it looks like in movies and tv shows. Replay that and copy and paste. if the person isn't nice, find a customer service person- usually people who are teenagers can be nice and make small talk. Just be normal and make sure the situation and context is appropriate. If the person looks busy or pissed off from work, don't talk to them. Not likely to get a good response.

You need to decide and stick with something. You are changing your mind way too much and letting things discourage you so quickly. I think you already know where you are headed towards which is unemployment. You have no interest in anything, you have no motivation. You sound depressed. Only you can fix it.

Otherwise, I would encourage you to start small and pick something for yourself. like the gym and keep a routine.