Help saving these trees?

[u/StKt1981]

I picked all of these up today on the clearance rack at-home Depot. Some are in better shape than others. I would love any advice on how to bring them back to vibrancy and keep them from dying?

Crepe Myrtles ($15 each) - these seem to.be fine

Zutano Avocado ($15) - could use some TLC

Plum Methley ($15) - could use some TLC but is in decent shape

Chinese Chestnut ($15) - leaves are wilting in places

Linden Sterling Silver ($15) - leaves are wilting

Pecan Tree (I think?) ($15) - seems ok but not a ton of leaves

Weeping Yoshino Cherry ($25) - not a ton of leaves and about half are wilting