I have a non-rooted P30 lite which I no longer use. To cut a long story short, there are about 100 files (mix of PDF and videos) I need within my /data directory that were deleted about a week ago which I could do with recovering. I'm aware that it is possible that the memory has been trim'd in this timeframe. The phone was only used for two days after they were deleted before I turned off the phone after upgrading.
I have found this answer here: How to recover a deleted file from /data partition? but unfortunately it needs the phone to be rooted. I can't root the phone as the bootloader cannot be unlocked. I have full access to the phone and everything on the phone works fine.
What options do I have for trying to recover these files? As I no longer use the phone, I am happy to risk the phone/use potentially destructive methods to recover them.