Can you make them as I'm sepreate files?
I'm sorry, I don't know what you mean. If you mean slicing each frame into a separate image, you can use some sites that do it online.
I can't cuz I'm a mobile developer
What programs do you use for art and developing? Most have a way to do this.
I'm using Max2D
I would guess the online ones work on Android, have you tried any?eg
https://ezgif.com/sprite-cutter
no
Ok