So I found out that you can unlcok the gallery by completing the story, but only at that time. It is not accesible on the home screen. Something about the gallery I didnt like is that you can choose the scene or image you want, you have to go through every single image or gif to find the one you want.
I would prefer the gallery to be more accesible and easily traversible.
Overall, but pretty fun and simple game. Really did enjoy playing it.