Answers for "delete a picture from the background"

remove background from image

Use this one its best
linK: https://www.remove.bg/

background remover

remove.bg offer low quilty photos
instead try this one
erase.bg

background remover

Use This One 
https://www.remove.bg/

For More Detailed Color Edits
https://www.imgonline.com.ua/eng/replace-white-background-with-transparent.php