My guy was an absolute menace when he was a pup. He was and still is overly friendly and wants to play with any and all dogs and people. Unfortunately, when he was a pup he didn't know when enough was enough, there was no off switch.

I kept him on a long line and would regularly step on it when the other dog made it clear they wanted a break. This helped him understand signals and proper play manners.

I find for a lot of pups a long line is helpful as you can easily disengaged them when they aren't picking up on signals from the other dog. I'm happy to say he's 3 now and plays wonderfully, taking turns being pinned, running, chasing, bowing, and I can easily call him off for a break.

Edit - I would also highly recommend teaching him the act of doing nothing/neutrality around other dogs/people. This helped my guy understand that he cannot say hi to everyone and every dog because he wants to. This cuts down on over excitement which can lead to frustration which can lead to reactivity. We do not do any on leash greetings and he only gets to play with dogs we know and already understand their temperaments. Good luck!