Deleted photos keep coming back

I changed my phone to a Poco X6 5G some months ago and transfered all of my photos using the Xiaomi app (I think the name is Mi Mover).

After some days deleting photos, I deleted a total amount of approximately 10k photos.

Then, randomly, every one or two weeks, 5000 of these photos come back again to my gallery. Each time they come there is one less, so there are now 4995 or so.

I swear, I've tried everything. I disabled Google Photos backup, Xiaomi Cloud backup (I've never had any of them active). I also always delete them from the recently deleted list.

I don't know what else to do. Does anyone have the same problem?