Bike Forums has sub-forums for regional discussions. Pennsylvania people converse in the Mid-Atlantic sub-forum. You can start another thread there to ask your questions.

Also, there is a Central Bucks Bicycle Club. As with most recreational cycling clubs in the U.S. these days, the membership skews older, so they might have some organized rides that you'd enjoy doing.

Final thought: if you don't already have an electric bike/e-bike, you might want to consider buying one. Many older riders who have transitioned from their conventional bikes to e-bikes have reported that they're enjoying their group rides again, now that they're not having to struggle to keep up on the climbs.