Custom Sttructure problem pls help

I have a custume strucure 
I would like to achieve that when generating my structure, the structure does NOT break the blocks when it is generated. I don't mean Structure Void, but solid (or not solid) blocks. So, when the structure meets the environment, I want the elements of the structure to break instead of the environment!

I can't believe no one has come across this before and found a solution. I've already looked through all the posts, all the videos, and I haven't found anything that helps!

Please help! This should be a very simple thing, since you can't even make a forest without it!