why does the steam captcha say i keep doing it wrong even though i do it perfectly

Probably doing it wrong

You're not doing it perfectly.

Because you're doing it wrong...

You're a robot

I'm sorry to be the one to have to tell you this, but you're actually a robot. I know that's probably a bit of a shock, but given your insulated shielding, I think you'll be fine. Take some time to calculate what to do next, then DDoS attack the meat sacks into submission.

It's been broken in the desktop client for years. Go to the site through your web browser and do it there.