Where to find my "automatically" backed up folders? :/

[AC Question]

If a new folder is created in my gallery from say whatsapp images or vids or kids taking pics etc, my phone asks do i want to automtically update pics that are put in this folder? It has a cloud image with an upward pointing arrow inside, but Inhave no idea where to find the pics now? Clearly tech is not a strong point help pretty please.... thanks