I have an area in my back that gets very little sun. In past years I have noticed the edges you could almost roll up. This year I was gone fir 2 weeks but had yard tended to by irrigation eo day 40 min in this area. When I got home I saw little circles(animal digging) and bunches of dead like grass-when looked n pulled in grass it was like there were no roots securing it to ground and this whole area was like this. Asked fertilizer man n he stopped looked Said he didn’t see any grubs are in sex better go ahead and put grub ex down and he also noted that you could almost roll the grass up. I am very concerned. Also yesterday in a more sunny part of this yard but still some shade my dogs are playing and they were actually when they would run and then stop pulling up areas of grass and I noted once again this almost seemed to not be routed to the ground. Now we got 3 inches of rain and my landscape guy thought maybe it could’ve been due to just the recent rain. I’m very concerned about my backyard I have a lovely backyard are used to be a farmers orchard pre-1970s it has good earth and many perennial gardens that do well obviously tolerant of shade. There are many big Ash trees and some cedar trees that the areas that have grass are the most open areas of the yard. Please help. Thank you