I really don't like hanging out in big groups.. is that bad?

I feel like whenever I am in a large group of people, even if they are my closest friends, I still can't fully be myself! I can be myself one on one with them so easily, but all of them at once? That becomes difficult. I would rather just sit there quietly and watch. Is that bad? What do I do to fix this? Sometimes it leads to me feeling like I'm being ignored because no one is noticing that I am being quiet when I am usually very loud around them! :/
I really don't like hanging out in big groups.. is that bad?
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