When I'm texting and want to send a photo (No. To my daughter.), the phone goes first to the camera and whatever is in the viewfinder shows on the screen. When that just happened, what's in the photo below is what I saw. For a bit I thought I was looking at a photo of the space shuttle or something I didn't remember taking.
Too many options on those things. Reminds me of car stereos before touchscreens where a button had like 15 functions and you had to play those things like a piano if you wanted to adjust something. Now the same thing is happening to touchscreens
It depends what type of software your phone has, but maybe what you're clicking is the Camera icon. Maybe try looking for something that looks like a file folder icon, or a paperclip icon, to access photos in your gallery.