causing structural damage that lead to it’s collapse.

Nope. The debris from WTC 1 caused structural damage to the southwest region of WTC 7—severing seven exterior columns—but this structural damage did not initiate the collapse.

What do you think structural failure is meant to look like?

It’s meant to look nothing like an implosion from a controlled demolition.

The reason why you don’t see surrounding buildings damaged when they’re demolishing something like a British Tower-block is because they time the explosions precisely, shore up anything that might get damaged and evacuate the area.

Which is why the clean destruction of building 7 is so suspicious.

Do you, hand on heart, think a building right next to that happening, wouldn’t suffer structural damage?

This is the opinion of NIST. i.e. The official US government line.

Why spend millions of dollars doing it yourself

Because you want billions of dollars of Iraqi oil.