UK phone and laptop seized

Hi. An Iphone 13 and a Mac M2 have been seized. Much of what was on them were deleted from cloud and from recent in a way they can't be retrieved by the user. The devices were low on memory and were being used very frequently for photos and recording before being seized.

What is the likelihood that much of the old deleted data has been overwritten and how much is forensics likely to find within the periods of 2024-2025?