How to swap BTC to ETH no kyc?

I am a BTC holder, I am studying ETH and its defi, I would be interested in trading some BTC for ETH, I would like to know what is the safest method to do it?

I have them on hardwallet, so I'd prefeir decentralized way, I did few reaserch and I found thorswap.finance is legit for big swap?