There is no safe way to do this all at once in a crypto world. Even the safest exchanges like coinbase doesn't provide you with enough security to trust them with your eyes closed. They have known to "over do security" measures and keep your money in there for a long period of time even until a court order is released, a lot of people lost thousands of dollars on places like Coinbase.

Hence I think you can't exactly do this that quickly. However if you decide to slowly do it, you can just send small amounts of money to a place first, get a rating high, get the exchange to know you, give all your info and slowly you can increase the number, it may take months even a year to achieve all of it, probably even more but in the end that's the safest way.

There is no way for not using face to face exchange with someone or giving your KYC information for that amount of money, you have to either do one or the other. You can find an Bitcoin ATM machine but they will not have that much money in it.

It will take a time to sell this amount.
You can sell the locally on localbitcoin or some trusted sites like that.
and don't sell a large amount at instance only small amount in random times.

Just don't sell in person. A guy got killed for 5 btc a few month ago

someone told me coinbase is good, but it will ask for my id..

and i don't want any face to face exchange.

and you're not allowed to mention anything to do with crypto. that's a given.

Blockchain is a distributed database. Essentially, blockchain is a trust mechanism that is reconstructed using distributed technologies and consensus algorithms. The blockchain can be simply understood as a transaction book maintained by all participants. The disclosure of the account information enables all participants to verify the correctness of the transaction and the billing together, making the account book's ability to prevent malicious tampering. All participants can trust the carrier.