Q: deleting photos on computer & devices

well......I toggled out of icloud photos on my ipad then went to photos and all of my photos were being deleted before my eyes.....so I toggled back in and they began restoring on ipad AND iPhone!  why did they go back onto iPhone?the few photos and videos that I had deleted on computer earlier and that automatically deleted on iPhone earlier are now back on iPhone.....what am I doing wrong? I guess whether anyone can help (hopefully!) or not, I can wait til they all get back on ipad (probably at least an hour or more...) and then go back to photos section in icloud on laptop and try deleting a few again and see if they delete from both devices then. any help is still appreciated : )