Bridesmaids trouble

So I’m getting married at the end of the year. We are having a small wedding due to Covid & honestly we like the intimacy of having just our close friends and family. But already I’m having bridesmaids issues. My maid of honors is amazing. But the other girls can be unresponsive to plans ect. Well this morning one of them backed out due to ‘expenses’ even though she knew what they were. She even said she thought we’d be paying for everything lol Was very rude & confrontational. I just said it was ok and I understood. Another one responds randomly & doesn’t say much. At this point I’m feeling very overwhelmed. I’m not a bridezilla if anything I been very chill about everything. I let them decide where to go to bachelorette party, their dresses ect.

I’ve never had many gf’s so I guess in a way I’m starting to feel insecure about everything. I’m social but can be a little bit timid & never been great at making girlfriends, I am someone who has lots of guy friends. So I’m not sure what to do here I’m feeling pretty sad & overwhelmed. I don’t like telling my partner to much because I feel pretty embarrassed.