We're all but heroes from ages.

And I concluded that it would be the best for me to become a decoy.

And even now, I am perfectly sure that that judgement was not wrong.

Supposing "what if I had done this back then"

or "what if I had done that"...

What do you plan to do with what-ifs and regrets at this late?

No matter how much you twist your head thinking of them, you'll never get anything from it.