I prefer Atomic Wallet, you can exchange your bitcoins for Ethereum with good fees and you do not need KYC, also the Godex.io platform and Letsexchange.io are the best for me as you can do many transactions anonymously
I'm not familiar with Godex or Letsexchange but as far as I know, Atomic Wallet uses Changenow to process the transaction. So, the KYC policy might change and get complicated even if you don't use Changenow directly. There have been many negative discussions about Changenow in the past iirc, so anyone interested in using them is recommended to research more about them.
Changenow aside, so many of these instant exchanges don't offer their own exchange but connect to other services like Changelly, Changenow, etc. I've seen so many KYC complaints in the past even if the transaction amount is allegedly low. So be careful when using them. If you don't want to risk it, you better use Bisq or something similar if converting to BTC is the only thing that you need.
That's usually what these instant exchanges or swaps do as we know. I think I'm familiar with godex but never have used them. I'd like to add and also recommend bisq.
Although some of the mentioned are really convenient to use but not until they randomly ask you with kyc even if the transaction you're about to do isn't that much.
@OP, how you doing, which exchange/swap you chose?