I wanted to delete my wallpaper on my android 7 TV-box, but when I used some file explorer for this purpose, it deleted some important file(s) by mistake in
/data/system/users/0 and I could not restore them. I could not install any data recovery from Google Play either.
Now, I cannot use my keyboard properly or download apps from Google Play and many other personal settings are not as they were before.
How can I restore system files
/data/system/users/0 just like the way it was?
Should I use factory reset at last?