say someone asked you to open your wallet and asked you where your funds came from, can you just say that you mined it? since XMR cant be trace afaik

it just hard to convert it to fiat, even decentralized excahnge right now have limited option like haveno and localmonero is down.. could anyone give tips on how to convert xmr to fiat? preperably no kyc, but if there is kyc its fine also