Feel like giving up

I feel like giving up with trying to socialise. I thought it would be nice having mummy friends, and I became friends with someone in the hospital when we both had our sons. We meet up once or twice week. She met some other mums on a mummy walk and then we have all met up twice. I just feel like they aren’t friendly towards me or like they don’t want to talk to me. If i put something in the group chat, the only one that responds is the one i met at hospital. I followed one on instagram but she didn’t follow me back (probably silly i know). I don’t understand it as i am an average, down to earth, fun person. Makes me feel like saying no to the next meet ups🥺 anyone else find it difficult? Sorry, just needed to vent.