Why are they like that with me?

I don’t like my family but I do love them if that makes sense. I have 10 siblings and only talk to really one who understands me. My mom just passed and she was the only other person who I was close too. My “siblings” and I are trying to plan and organize things but I fee like I am being ignored. Anytime I have a question in our group chat or have an opinion on our moms funeral the only person who I really feel has my back is one of my sisters who I am close with. My two older sisters I don’t like them really but I am just civil with them and my brother who is younger than me I don’t like him either. They make feel invisible when I am with them. My friends and coworkers make me feel more seen. It’s like anytime I have a suggestion or ask of something they either ignore me or don’t respond until later. When all 4 of them text they tend to respond pre quickly and go with that person wants.. the only sister I have part of our group chat is the only one who really I fe has my back. I wish I didn’t have to go through this planning with them for our funeral. I have always felt like I did not fit in. I guess my other siblings are more aggressive in what they need and want and it seems that’s respected more even if they have gotten in fights they are respected more between each other. I have always felt like the black sheep aside from my other sister who I talk to more. I guess maybe it’s the way I am in terms of my personality. I don’t know it just makes me feel bad. I am also scared that after losing my mom that I only have my one sister out of all my siblings that I really connect with and that scares me.