To take funds out of a channel but keep the channels open you need to loop out or use a swap service. Fees will vary depending on the current onchain fee environment. Or find someone you trust to trade lightning funds for on chain sats. Or if KYC isn’t an issue and the amounts are relatively small, send via lightning to Cash App or River and then send back out to your on chain wallet address.

I’m not aware of a way to receive lightning payments to your node and have them go straight to your on chain wallet, as that would require some sort of swap to occur.