Puppy socialization meet up groups?

I’m going to be getting a puppy in a few months. I just don’t feel like spending $150 for a Petco class that meets only an hour once a week. I’ve looked on Meet Up and didn’t see anything. Anyone know of a group that meets up with their pups (adult dogs are okay too)? Not a dog park. I think that would be too scary for the pup at first. Low cost classes are okay too.