I think we live in a society where extroversion is considered the norm and introversion is viewed as being a bit odd. It sometimes feels that unless you are being noisy and sociable and teamy and buzzy, you’re not fully playing your part. I think that this attitude can be apparent in our churches, which isn’t surprising as many parishioners are extroverts (as many of are introverts) and by their outwardly enthusiastic nature are more noticeable.
But there is plenty you can do as an introvert though, prayer, adoration, quiet works of charity, kindness to others, quiet work behind the scenes and more. Don’t feel that because you are not part of committees, or social groups, or teamy stuff that you’re not doing your bit.
We each are not called to do everything. Some are called to do the teamy, sociable, active things and others are called to a more contemplative existence. We each have our part to play.