I don’t fit with the family?

I love my family, I really do. But lately, I feel like I’m more of an obligation to them. To be checked in on to see if I’m still alive. An asset for my own sibling to help save money on paying bills. And overall just the alien to them. I’m a shy, home body, nerd in a family of outgoing people. I have a low self confidence bar and sometimes the comments they say can hit it even lower without them realising and when I tell them that they just ask why or how and not really apologise for it.
I noticed the change in family members when it came to me and my sister. My mother actually came to meet her during her birthday even though she lived in Alabama and we in Maryland and mine had passed just months before while we were living together. I thought that was odd but childish but I also realised I didn’t even get a phone call from her. My grandparents even find more to talk about with her than me. My sister is nice to me but only because maybe I’m helping her save money on the apartment. But times she’s really mean and cruel and shoots my self confidence down without even a second thought to what she says and it hurts.
I try so hard to connect but I see it in their faces they don’t want that from me. I don’t know what to do.