Depends on your starting point. If you already have KYC free Bitcoin Eigenwallet (atomic swaps) or Retoswap (DEX) are good starting points. Also if you care to convert some fiat RetoSwap can set you up with cash by mail for exsmple.

If you accept small risk using instant exchangers, go on trocador.app (best used with tor browser on safest security setting, their onion address is on the website) and swapping from whatever coin you have like Bitcoin. Like another user suggested, Retoswap and Eigenwallet are two trustless/trust minimized options at the expense of convenience (always a worthy trade-off but don't let perfect be the enemy of good)

Can you say more about Eigenwallet? Seen that name dropped a few times now. Is it usable today? How's liquidity? Underlying tech? etc