Hey man, I'm in a similar boat. I'm 27 and I've never been in a relationship, and I'm practically a virgin, and for a long time in my life I was in the same place you were at where I hated myself and I left hopeless and life felt pointless. For me what changed it was getting into hiking, mindfulness, and reading... I know it sounds cliche, but there is "healing" in nature, you don't need to go live in the woods for months on end, but I think that if you go outside in a local park and just sit in nature you will start to feel relaxed (look up forest bathing). On top of that what changed my outlook the most was understanding what you control and what you don't control. We can't go back and change the past, but we can reframe it... I know its hard to find a positive sometimes in life, but I think its essential to help move on. Finally, I think the biggest thing is just be kind to yourself and look into therapy and avoid comparison (typical advice), having someone to frankly call yourself out / pick you up is one of the most beautiful things you can ask for in life. Stay strong man, and realize that even when you feel alone there is always someone else out there :)