Why can't i delete unwanted pictures?

[AC Question]

IS IT BECAUSE I GAVE SOMEONE CONTOL TO SEND MY JUNK TO A CLOUD, IF SO TELL ME HOW TO DISABLE, THANKS. I hate this phone...

 

[belodion]

If you mean Google Photos backup, go to Backup & Sync in the settings, and choose which folders to backup. Also, if you backup manually, you can select which photos you want to backup.
Unwanted photos can be deleted from a Cloud backup.