Where to make friends or find groups?

Hello! Im 19 and ive lived in indiana my whole life, I live in the castleton / Fishers area and basically im just looking for places or groups to make friends. Im not in college and its hard to befriend strangers because everyone is very weary. I spend everyday alone and I really just need to get out there and socialize but im coming up with dead ends. If you guys know of any 18-21 groups or activities around my area or something please help me out. Give me alllll your ideas!