There are a number of ways to be paid as a freelancer / remote employee / vendor where you receive bitcoin.

Source: https://cointastical.medium.com/freelancing-platforms-which-pay-in-bitcoin-e38be56166df (under the Getting Paid In Bitcoin (Wages-to-Bitcoin / Bitcoin Payroll) section)

All of those, which use the banking networks, require you to provide identity / KYC though.

The only KYC-Free method would be to get your employer to do the conversion on their end and send payment to you in bitcoin. There are invoicing tools for that if you want, like Blockonomics, BTCPayServer, SatSale, etc.

This is one of the areas where prepaid gift cards (e.g., Amazon, prepaid VISA/MC) have been used as a substitute for use of the banking networks, as the virtual card's code can be transferred directly to the freelancer / remote staff, regardless of their location. But converting prepaid gift card into bitcoin via P2P trading platforms is expensive, due to many of the cards traded being either fraudulently acquired, or where the seller spends the funds before the buyer redeems the card. The high price lets the practice continue, at a profit to the buyer, even with a relatively high rate of fraud occurring.