Since there is no restore system or backups it's like trying to put Humpty Dumpty back together again.
There are a lot of Android experts over as XDA Forums (the king's horses and men) but I have yet to see anyone undo what you have listed as needing undoing.
Proof this is much harder than it seems? See Google not answer at https://www.google.com/search?q=photos+back+into+my+Gallery+site:support.google.com
Firstly, my Firefox browser will not allow me to access CNET, I have to open Chrome, which I never use! I have no idea how to overcome this!
Due to a stupid error, I have deleted most of my photos in my Samsung Galaxy S4 Active mobile along with all the recorded data on my S Memo pages. And, probably, many other items that I have not yet discovered as missing!
I have downloaded an App called DiskDigger for photos. It has pulled up over 1,000 photos, some of which are duplicates or more. On wading through them and choosing an awful lot to restore, I am given the following choices where to restore them to - Bluetooth, Email, 3 named emails, Save as, Save to Drive, WhatsApp, WiFi Direct. This is not very helpful as I want to get them back into my Gallery, and have no idea how to do this.
The heaps of data that was in the Memo pages of my S Memo obviously won’t show in amongst photos, so what is a good free app to use that I could try to obtain them and any other data not in photo or video form, and how to restore them too?
So if anyone can advise me to get the found photos back into my Gallery and how to find the other data and restore that too, I will be very thankful!
(I am not very technically capable, so please write slowly as I don't read very fast!)