So I think it’s a root motion animation but the animation isn’t driving the capsule. You have two options.
You can use root motion in your character but there are limitations (like no online multiplayer). I steer clear of root motion but I think you enable it by going into your character’s AnimBP and changing “Root Motion Mode” to “Root Motion from Everything”. That means all the animations need to use root motion though.
Your other option is to use animations without root motion and move the pawn yourself. This is done by calling functions of the CharacterMovementComponent (i.e. AddImpulse and AddForce).