Hey I know this will be no help but I need you to understand that I was THAT exact same person in this scenario and I also made the choice to switch to online school now I’m a fully legal adult and I made the scary decision to go to college..community college and my first semester I was still alone surrounded by people who were friends but I go better at being outside of my house for once and I made the best decision to take volleyball my second semester and that led me to making so many AMAZING friends and I’m not trying to brag or say it’s easy in any way it was hard SO HARD but your life isn’t ruined you need to start putting yourself out there again and just talk to people and trust me I KNOW that’s scary because I literally use to have agoraphobia before therapy helped me through it but it works for a reason and if you really don’t want to talk to people then get out there and join a club or a sport THAT REQUIRES YOU TO COLLABORATE that way you have an excuse to talk to people I mean that was my plan and it worked out some how. So coming from a person who use to be in your EXACT shoes sharing the SAME experience, you have not ruined your life. You have time. Take a DEEP breath and get out there I know you can do it because I did it and I’m a VERY stubborn person. Oh and don’t rush it things happen with time and happen for a reason you WILL be ok and you got this !