So much wrong with that, I’ll just let you know the account was compromised by you and nobody else.

If you want to quit steam market you need to not have a steam account as it's part of steam.

f you want to quit steam market

引用自 Chompman：

If you want to quit steam market you need to not have a steam account as it's part of steam.

No, I use steam because it is just a game platform for me, I did not give my consent to use their market :) It is like a game store, I paid and I leave, I won't trade with others in the game store

Hijacked. Malware or phishing.

Follow steps 1-6 to secure your account:

1. Scan for malware https://www.malwarebytes.com/
2. Check that the email and phone number on the Steam account are still yours.
3. Deauthorize all other devices https://psteamproxy.yuanyoumao.com/twofactor/manage
4. Change passwords from a trusted/clean device.
5. Generate new backup codes for your Mobile App https://psteamproxy.yuanyoumao.com/twofactor/manage
6. Revoke the API key https://psteamcommunity.yuanyoumao.com/dev/apikey (there should be nothing in the APIKEY)

Regarding items:
https://psteamhelp.yuanyoumao.com/faqs/view/3B6E-B322-2400-8D24
If said items were from CS2:
https://psteamhelp.yuanyoumao.com/en/faqs/view/365F-4BEE-2AE2-7BDD

If you need help with Account Security or Recovery, please contact Steam Support.