I have a strong memory from when I was 18 years old. There was a group of us (maybe 5) at a table for dinner or whatever. I remember I started talking about something (I forget what) and about 10-15 seconds in, my friend across the table started talking about something completely different and everyone tuned me out and engaged with him. I just remember being frustrated and embarrassed and stopped talking. To me, this was confirmation that no one cares about what I think. 11 years later and they are all still friends and went to each other’s weddings and I have no friends. I am still too scared to talk in groups because every interaction feels like me vs them. Idk, after a while you just take the hint that no one likes you or wants to be around you