Making floating NBT Structures Not Spawn Within Terrain 1.19.2

So the first one is a strucuture which has a set of 5 NBT structures in it they spawn in a range of y levels and the second one is just 1 a single NBT structure with different ranges but the issue is that they alter terrain when they should all be floating and not being close to the ground the terrain is different where it has multiple layers and goes up to 300 so it needs to detect layers and spawn away from the blocks