Q.Fruit on Peach Tree
I have a peach tree that is several years old. The tree gets blossoms and fruit, but the fruit dries up, like 1/2 inch fruit that looks like it has been dehydrated. The tree gets water once or twice a week. We got one peach and it was small but delicious. Through the years we pulled a lot of the foliage off cause the tree gets a lot of foliage and it will knock the fruit off the tree, but that wasn’t the case this year. We have tried more water, less water, fertilizing. We are at a loss. Any advice?

There are 2 things that it might be. The first is that it may be brown rot. This will rot the fruit on the tree and cause it to shrivel up. Here is more information on that:
https://www.gardeningknowhow.com/edible/fruits/peach/brown-rot-fungus.htm
The other is the flowers are not being properly pollinated. Improperly or under pollinated fruit will be aborted by the tree early on and can simply just shrivel on the tree. This article will help with attracting pollinators to help with getting the tree pollinated:
https://www.gardeningknowhow.com/garden-how-to/beneficial/creating-a-pollinator-garden.htm