STOP ANYTHING ALTOGETHER. NOW.
]You're NOT VAC banned. You are the victim of an API scam

DO NOT TRADE ANYTHING. It will be lost if you do!

Your account is compromised.

DO THE STEPS BELOW IMMEDIATELY
Scan for malware.
https://www.malwarebytes.com/

Deauthorize all devices https://store.steampowered.com/twofactor/manage

Change your password on a secure device.

Generate new back up codes. https://store.steampowered.com/twofactor/manage

Revoke the api key https://gtm.steamproxy.vip/dev/apikey

You might also want to read up on the API scam...
https://www.reddit.com/r/GlobalOffensiveTrade/comments/a5t6kc/psa_huge_csgo_youtuber_fell_for_the_fake_site/

https://forums.steamrep.com/pages/hijacking/

bro you got hacked change your password

-REP

nice play bro!

Added for trade

+rep good person <3