Doggie is very agitated

Hello! I have an 6 to 7 month old puppy who is really smart, and, as he grew older I he became more and more needdy when we're outside with him. It becomes harder and harder to do stuff outside because all he wants is attention, and when we're not playing with him, he starts to bite our pants or t-shirts, he ripped my BF's bag today and once it even hurted me when he accidentally missed the t-shirt and bit my skin. We give him some fetch time and sometimes tug of war in the afternoon, he has some chew toys (distroyed 3 noisy ones, had a cow femour, and is having a hull), his favorite toy was a plastic plant pot. I do think we're doing well with his mental excercise with training but I admit I'm not happy about how he's fisically excercising, he's still not fully vaccinated so we don't walk him yet, and our yard is big enouth but is concrete, so during the day he mostly lay down (multiple people say he only sleeps) and we're working to move to a place with grass and more shadowy spaces for him. (When we moved to here it was winter -no snow- so the concrete wasn't hot at all, I didnt think about how it would change in summer -it is Summer here) I wanna know tips to make him happy during sunny time and also more stuff that could make him entretained when he's alone or some perspective about him becoming so needdy (if it happened with your puppy and it was bad enrichment or something eles)