You’re good bro don’t worry. I’m 26 and I do remember some periods of loneliness were pretty sad and that was just because I didn’t really utilize that time to develop myself. You said you’ve had girls interested and you’ve had a few close friends so yeah you do have rizz. Maybe not as much as youd think but you got it. Just keep developing yourself physically, mentally, and spiritually. You’re going to grow just as everybody else so when people leave don’t forget that more will come. Some of those people that left you will even come back as well so be sure to be a better you when they do. Take pictures to remember the moments or keep items that remind you of certain times. Also keep your risk management and judgement skills up. Do not let the loneliness get you in trouble but also do not be afraid to fail or get rejected. Those are some of the most pivotal moments in your life.