I feel lonely in I’m a mess

Im a 15 year old girl, many things had happened in my life. I suffered from bullying, anxiety and clinical depression, I even tried killing myself a lot of times a long time ago. Still I got help and told my parents, who took me to a psychologist. After a year of treatment I’m about to stop consuming my medicine for depression, even if I feel a lot better in many aspects of my life. I still feel lonely. I quit my group of friends some months ago because I felt excluded (but I’m still friends with them), so I goined another group, with this group I feel a lot better, still a little bit lonely. Every time I see a status on WhatsApp or instagram of my friends in the group I quit, I see them hanging around and having fun, I want that, but I’m never invited and I just stay home doing absolutely nothing (since the normally hang out when we don’t have homework). I want to get invited to other social events with people, I doesn’t matter who if it’s with people my age. I just want to hang around with friends, but either I’m too busy or the are “busy”. Also I forgot to mention that the never chat with me on WhatsApp like other group of friends do, but it’s just with me who they don’t chat with (they know a answer pretty quickly, they mention that because they just text me asking for homework). So....does anyone knows what can I do?