The OTC route works but there's actually a cleaner way to handle this without hunting down traders. Linea has a native bridge that moves ETH straight over to Ethereum without needing a middleman. You can use this bridge, for example: https://defiway.com/bridges/bridge-eth-linea-ethereum . You just connect your wallet, punch in the amount and it does the rest. Fees are pretty reasonable and you're not waiting on some random trader to forward your funds.