How to save a dying tree?

cindy

So our front baby tree is dried and dying, and we need advice on how to save it (unless it’s dead already). Google hasn’t been helpful, and we don’t want to hire a arborist. The mulch is new, and we’re building a habit of watering it.

Anybody got any more advice? How many times do you water your tree/lawn? Here are some pics of the poor thing :(