How to get my gallery screen to full size, which is now minimized on Samsung Edge?

[Android Central Question]

took photos of finished jigsaw puzzle and tried to have a slideshow.Don't know what I touched but was then given full sceen on mobile on how to take selfies when which I am unable to delete.I then go back to my gallery and click on the jigsaw pictures and a message appears telling me that I have a minimized screen so I am only able to see picture in half of the screen and the other half shows a different picture that I have in my gallery.

 

[B. Diddy]

Welcome to Android Central! Which Samsung phone?

Please register on this forum, which will allow you to engage in discussion more easily, as well as post images. https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html

 

[mustang7757]

Need more information to better help suggest things.