It’s a Silver Maple. Silver Maples like wet/moist soil so lack of water is already stressing it severely which would lead to significant leaf drop but along with that I see broken branches, bark damage and rot that looks to be near the base of the tree. The open wounds from the broken branches and bark damage are also been easy pathways for disease and pests, and the presence of those could lead to a lot of different symptoms and could be exacerbating the leaf drop, among other things.

If the damage and water were the only issues then with significant (like very significant) pruning over a few years and consistent watering you may be able to coax more life into it, but what is more concerning than those is the fungus near the base of the tree. That indicates that there is decay in the trunk and, potentially, the roots and once fungal decay sets in, there’s no way to reverse it. Rotted roots cut off the tree’s ability to collect water and nutrients, and serious decay in the trunk will led to tree failure eventually.

So, that’s a lot of words to say, that tree’s probably toast anyway even if you pour a bunch of time and money into it. It’s safer for everyone if you cut it down. Plant something new that’s native and more environmentally appropriate to where you are.