Hello Sky Pink, would you be interested in checking to "The Action Fruit Society"? in you are really interested, you can subscribe to seasons one and two.
Most drawing apps should let you make a GIF somehow. i use free FireAlpaca, and use "Onion Skin layer", where each layer is a new frame. Then I put it in an image --> GIF converter online. It might be different for you, you can probably search up turtoirals