How can I scale my animation’s speed with animation player keys? And if someone can explain these keys potential it would be great. I know how to use keys simply (only animation and frame from Animation sprite).
What exactly do you want to do? You can set a key by clicking on it and moving it on the time axis. the animationplayer sets the property to the key value as soon as the timestamp is reached. You are using an AnimatedSprite and an AnimationPlayer. Normally you would only use one of those, since AnimatedSprite already has their own animation.
If you want to scale the animationspeed during the animation, im assuming you have to click on the timestamp where you want to have it changed and then klick on the key-symbol next to the speed-scale property, to create a key