Animate a simple FBX model in Blender I want to animate the following arrow in Blender so that the left and right triangle can flip, like a bird (ignore the white line in the background), but I have no experience with Blender before. So how can I approach this problem?

I want to use this animation in Unity if this makes any difference.
For practice, you can take an animation approach in Blender but for a simple animation like that, I would personally make the animation within Unity. It will give you a lot more control when making a game.