my account was stolen

[Stefan Batory]

I have kinda unusuall problem. My account was stolen back in 2020 at that moment i didn't even try to recover it but now im wondering if it's even posible. My password was changed, my email was changed, and my guard token allso. But i have screenshots of evidence of my ownership of the account in the form of email from 2019 (before the account was stolen) with confirmation of purchase. Does anyone know how I can recover my account? allso how I can contact steamsuport directly?

[Aluvard]

You need to be logged out of to start recovery process.

https://steamcommunity.com/sharedfiles/filedetails/?id=3456188107

What counts as viable proof of ownership:
https://help.steampowered.com/en/faqs/view/40A0-8B4B-B54B-C51A