From the Super Mario Wiki
Everyone, BREAK! is an official course in Course World in Super Mario Maker 2. It is the eighth level published by NintendoAU, with the tags "puzzle-solving" and "multiplayer versus". It is set in the desert theme for the main area and the underground theme for the sub area, in the Super Mario 3D World style.
At the start of the level, there is a large group of Brick Blocks, two red POW Blocks, one Thwomp, and the green pipe which takes Mario to the sub area. Mario must have the Thwomp activate the POW Block underneath it to defeat it, clear away most of the Brick Blocks, and open up the pipe. He is then able to use the other POW Block to clear away the rest of the Brick Blocks. He must then enter the pipe, taking him to the sub area.
The sub area is filled with Crystal Blocks, with red pipes giving out red POW Blocks along the way. Mario must use the POW Blocks to clear away the Crystal Blocks in his way, allowing him to get the Pink Coins scattered throughout the area. There are also yellow pipes which Ant Troopers come out of. After Mario collects all five Pink Coins, he gets a key, allowing him to unlock the Key Door near the bottom right. He must then simply use a POW Block to clear the last Crystal Blocks in his way, then enter the pipe leading back to the main area.
Back in the main area, there is another red pipe which gives Mario a red POW Block he must use to clear the Brick Blocks, allowing him to directly reach the Goal Pole.
"Break the blocks and find the red[sic] coins! Grab your friends & give it a try."