Lost my brother a week ago. The next day I received a picture in my phone. I have never saved it.

lost my brother a week ago, after the funeral I came home and my phone popped up a notification of a picture, I went in and it was a picture of him. I have never saved it, when I notice the picture and looked at the details, it said 1 year and 6 months ago... I wonder how it popped up again. Can someone tell me what it is...<br><br>Edit: I went to look in the keep safe, it was there but not in my photos...<br><br>Edit 2: I went to settings and checked the “keep safe in trash”, when I open it, there’s a lot of pictures that I haven’t saved and it was gone when I check it again.. BOOM!