Playdate friends for Lexi

Playdate with Lexi. She is 2.5 years old, has a lot of energy and is very friendly playful with other dogs. We are looking for play mates for Lexi so that she learns to be calm around other dogs after playing because she always wants to play and run, so she can learn from good behavior and make friends. Ideally meeting with female dogs or castrated males. We could meet indoors, or walks outside and train together; we could also rent a private dog-garden for them to run, play, train, etc.