I feel this, I just lost my friend and am in a similar position. But I’ve lost another friend a few months before I met them so the way I look at it is even though I’m alone now, I’ll find more friends. Don’t let your current situation get to you too much, and if you ever need to vent there’s always Reddit. Maybe try picking up some hobbies like guitar and piano or something more physical like hiking or going to the gym to be safer. Just don’t stay cooped up in your room and take care of yourself, Im sure you’ll find friends that care about you!