No one’s ever hit a great shot because of their footwork, but their footwork is a byproduct of how they’ve used their body in the golf swing. A common flaw many amateurs have is that they kick their knee up and get up on their toe early in transition as opposed to rolling the trail foot and pushing up.
Using an alignment stick or a shaft, stick it into the ground at a very acute angle so that it’s only a few inches above the ground. This will provide immediate feedback because if your foot rolls and then comes up, you’ll never hit the stick or shaft, but if your foot kicks up, you’ll hit the stick every time.