Anyone's parents insult them in front of their relatives

Today in my house there were a bunch of relatives visiting .now I am insecure af about everything right so I didn't want to greet them because u know relatives they make fun of u as much as possible .so then not only my mom forced me to come down and greet them she said I was a loner who doesn't have any friends and tried to put me down to make the relative's kid feel good .and technically wanted me to babysit their 5 year oldkid who yaps a lot . why are parents like this