Puppy always wants to play with dogs

I have a Five month old Australian Shepherd/german who is always looking to play with other dogs. I think I’ve heard him bark once (to us, not even to other dogs) and when he does get to play with a dog it’s on leash or when he’s at a rover and they always say our dog tires their dog out. He literally does not get tired. I’ve seen other dogs who just walk right past mine but of course, mine always has to stop and stare to see if that dog wants to say hi/play even when I make it a point to say no. He’s so sweet but obviously, he needs to learn that other owners/dogs aren’t always going to want to say hi.

We socialize him a lot so he’s used to seeing people & dogs and I’m hoping it’s just because he’s a puppy and he’ll grow out of it with training but anymore tips on training with that?