anonymous btc exchange

I have been busy screening this forum for answers on how and where to buy large quantities of btc with cash for quite some time now, but frankly I am lost. Therefore, I'm looking for some competent advice on this matter. I know, "competent" is perhaps a bit too much asked for, so I settle for...

I want to know how I can do exchange of BTC to FIAT without to provide any ID at all, is that possible? Back in time XAPO was a good service they charged your btc account directly if you used the VISA debit card they provided and no KYC was required.