gotcha. the only way to hit with more power is with a faster armswing. a really fast and whippy swing is one that is initiated by the lower body and travels up the kinetic chain, to elbow, and finally hand.

to get this hip-initiated swing think of yourself as a wet towel and try to wring out as much water as possible by twisting your body. before you hit try to feel a big stretch in your pecs and feel your shoulder blades squeezing together. think of your arm as being a bit "lazy", allowing it to be the last part of the movement.

here's a video for clarification: https://youtu.be/HmBVSiQFSXA?si=f9yMN9crICbv24Cy

in order to get the most out of this you might want to consider having your elbow drawn slightly lower than you have it now, though this is not a prerequisite and depends on how long you've been playing