Original Plot with a Classic Superhero Origin Story?

I've been hearing around here and elsewhere that I've been hearing that a good way to avoid stereotypes (Trope and character archetypes) is to subvert them, then I hear around the web that subverting them can also be a great way to be original. However, when I do this, then I hear "I've seen this done a million times before." Which confuses me. I hear "subverting and reimagining are the same thing" but when I do that, I still run into the problem. So I have 2 questions. Am I subverting wrong? and Am I reimagining wrong?<br><br>Here's an example. Let's say I have a hero who's origin story is a radioactive spider bite that also enhances his physical abilities, but I want to tell a different story than what is told in the comics and Spider-Man movies. He's a former highschool teacher who now works in the finance sector, but he uses his powers when he's getting home from work and he uses them for personal gain. He robs banks and jewelry stores, and he's not a beloved hero by the public. How do I get originality for this character even with the same origin story as spiderman? I've read and seen a lot of stories before when it comes to superhero stories, so I'm not sure if someone else has done this exact take before. I'm just trying to be original with my ideas, but with the plethora of superhero stories out there, I'm not sure if what I'm doing has been done.