I have two puppies one is 6 months and the other is 7 months and they play together and with other people but when we take them to the dog park they are loners. They just play together or just walk around I don't know what to do we continue to try and introduce them to other dogs but they aren't interested what can I do

I have heard that you don't want 2 puppies too close together in age because they will bond to each other and ignore others. Perhaps try taking one of them at a time to the park or enlisting a helper and taking them to the far ends of the park. Forced to socialize with others, they may become more quick to do so.