Check for player in the area that grows in size

Hello, I am working on an attack move involving a mob stomping on the ground, creating a circular effect that grows in size that the player can jump over to avoid getting hurt. I'm coding this manually and it's very time-consuming and sometimes doesn't work (the player is not damaged if they do not jump over the stomp effect). I wanna know if there is a much more efficient way of doing this or if there exists a plugin that can make it easier, I'm using Mcreator 2023.1.

I want Mcreator to check for the player once the stomp effect is spawned but I want the checking area to grow like this
https://imgur.com/a/meyc1tO

This is the way I was coding it, I wanna know if there is a better way of doing this
https://imgur.com/a/9F50pfl