I can definitely sympathise with you, loneliness and isolation can be suffocating feelings, especially when you're friends are right there. It wouldn't be a bad idea to contact your GP about feeling depressed, although the response can vary by GP (maybe different medication?). To speak quite personally, I found loneliness helpful in finding my own identity and of course it was really difficult and the lowest I'd ever been but in retrospect, I'm glad I had to go through it. I know who my real friends are, and who I am. I'm comfortable being alone and doing things by myself where I wasn't before. so if you have to stick through this for a while, there's a light at the end of the tunnel! I can promise you'll find your people one day, or these people might be your people and it's a rough patch. things work out! Rejection from a crush is always a hard thing to get over, especially if it's not always clear so I sympathise with that too. sorry haha! I think I rambled on about myself, but I'm just trying to say I've been there and I got through it! Don't forget you can contact helplines like Samaritans, sometimes just talking to someone can help, I used to call my parents more regularly back then, but I understand not everyone has the same relationship with their folks! I hope you get through this! I wish you all the best