But you apparently didn't understand the first sentence in the VAC ban information:
VAC bans are permanent, non-negotiable, and cannot be removed by Steam Support.

And what you want with your request in the vac forum is also questionable, since you were already told back then that there is no support here:
https://steamhost.cn/steamcommunity_com/discussions/forum/9/135509124605043521/

ok

Originally posted by dogeluccky:

I has been banned 3085 days ago. I ask you to remove the block from me, I understood everything during this time and there will be no more prohibited actions on the public servers from me. Thank you for understanding

https://steamhost.cn/steamcommunity_com/discussions/forum/9/135509124605043521/

you admitted in the other discussion already you used a skinchanger

if anything, then the ban is 100% correct