How to stop syncing photos in camera roll..?

If you want photos on either your PC or laptop and backed up to one drive you should be able to stop sub folders of Pictures from Synching on one device. If you put all your photos in a sub folder then select this folder in File Explorer then right click; select 'Choose One Drive folders to sync and unselect the folder with your photos in. This worked for me  

If you want the photos on One Drive and not on any of your device use Files on Demand - this can be selected in the bottom box on the One Drive settings page. ((double click the One Drive Icon in the taskbar tray then select Settings)

I had around 5000 pictures in my camera roll(Lumia 540) which were automatically uploaded in my onedrive folder. Recently due to low space, I have transferred all my pictures to my PC. But my phone is automatically downloading from onedrive and syncing.  Even though I stopped syncing, I tried deleting pictures from my phone also. 

How to stop my phone automatically download the pictures from one drive. ?

You can do one thing is you just select “Quit OneDrive” in more pop-up menu. Then, OneDrive will be closed and all running tasks will be stopped. Then you pictures will not download.

I have the same problem. The upload feature was already turned off, so Windows still tries to upload the photos but tells me it can't. I have an Android phone (Pixel 2).

That's what I ended up doing.

I want my pics my gmGma account is ******@gmail.com