Link to tupelo genus (Nyssa). https://en.wikipedia.org/wiki/Tupelo

Close up of black gum’s bark. http://departments.bloomu.edu/biology/Ricketts/Nyssa/N_sylv/N_sylv.html

I wish more details are shown to help narrow down i.e. the whole tree, side view of the tree & a whole branch to view more of leaves position. Ash tree has compound leaves. I can’t see more of the branches to tell, also these leaves appear not a match for ash (?) For now I’m guessing a species in the tupelo (Nyssa) perhaps ? Check out the genus and see if you have a match. The first two links are for the black tupelp/black gum (S. sylvatica). If this not tupelo, please make new post with details mention above & flowers or fruits images if there are any. Best wishes! https://landscapeplants.oregonstate.edu/plants/nyssa-sylvatica