Find out what concerns each has. There may be some way that you can help another member or another member can help you. Find out what the group wants to do together, and share in making plans. See where you can fit in. You may want to suggest something that you think the group should do.
Common actions are to visit, to do ministry projects, and to help with church activities.
It is important, too, that you decide to participate as regularly as possible. You lose something when you are absent a Sunday. Bible study is the first order of business in Sunday School. Learning is fun. Being with people who care about what the Bible says and what God wants them to do is supposed to make you feel good.