Am I a bad friend for not being open?

I need to understand if I'm a bad person/ friend, I dont have any close friendships but I do have a lot of acquaintances, I am not one want to blatantly talk about myself but will always answer any questions if I'm being asked. I do not ask people if they want to do something because I believe if they wanted to see me or hang out they would reach out. I am getting married next year and we dont have a bridal party mostly because Ive been a bridesmaid and dont want to put anyone through hell like that, but when I asked a friend if she would still be willing to help me plan our bachelorette/bachelors party she said "I dont know if that's a good Idea because I feel like you share more with other people " this caught me by surprise as I thought we were pretty good friends and it got me wondering if I'm just bad at being friends, I wanted to find out if it makes me a bad person for not openly complaining, talking , gossiping about myself and instead like to listen to others talk, or that I dont like to bother people so I would just wait for them to reach out if they wanted to see me? I use to ask a lot but after a while gave up because I felt everyone was always busy and if I was not good enough to be included in the barbeque then maybe it was their way of saying they dont want to hang out. Is it all in my head or am I being a bad person?