Where can i find in my IPad files the transferred photos from my Mac?

I transferred Photos from my Mac to my iPad, I seed the copied files on Teamviewer window "my files" but three problems in it:

1) I can't I download jpg files in photo folders of my IPad, I can just download them in a general misterious directory that, after, I can't open and manage on my IPad, nor by "Files" application

2) Attempting jump this problem, i clicked on single file (of the Teamviewer list "My files") just to see the image. Then I done screenshot of it and saved it in my IPad photos folder. 

3) Now I can't repeat this trick anymore, because of crash of Teamviewer app when I click on the single file to take a view