Fungi on plum tree

Need help.

I live in NYC. I have a small back yard. I planted 3 fruit trees next to each other, my mistake, now the trees are big and once one tree gets sick, the other tree get sick as well.

This year I lost all of the crop. Before the leafs came out and I sprayed the cooper fungicide.

However, that didn't help because all of my crop didn't ripe and had black dots or fungi and fell to the ground.

I have apricots, nectarines, and sweet cherry.

I don't know what to do, I want to be able to enjoy the fruits, but the fungi consistently killing my trees.
Can someone please help me?

Thanks
Al

Hello Alex- What you are seeing is most likely something called crown gall disease.  Had plum which produced great until I started noticing the soft crusty swelling on branches.  At first I thought I could simply prune away the offending woody area but ultimately it took over.   Talking to an arbicuturist friend: He said it is best to cut losses and remove the offending tree.   Do a complete removal of roots and as much soil  as possible and plant non plum related trees in its place.   Prune for compactness and open canopy with shears/saw dipped sterilizing solution before each cut.   If having a particular variety is important to you I would try large 160 to 200 gallon container with automatic watering and feeding system.   BTW- good on you for having a slice of nature sanctuary in your NYC community.

On the humid East Coast I am not a fan of the prunus sub-family (European almond/apricot/cherry/plum/peach/nectarine). They easily get pest due to the fact that the air is alot less humid in their native Mediterranean habitat. I have also found the same problem with non-native grapes, and also the apple sub-family (even the native juneberry can be a hit or miss)

My recommendation would be to select a few of the following:
Natives: pawpaw, Asian-American persimmon, concord grape, maypop, beach plum, sand cherry, raspberry/blackberry,  blueberry, currant/gooseberry/jostaberry, honeyberry
Non-Natives: Dwarf Mulberry, Chicargo Hardy Fig, Jujube, Hardy Kiwi/Artic Kiwi, Akebia, Goumi/Seaberry, Asian Pear