You can use Starknet official bridge to withdraw assets from your Argent X wallet to another Ethereum mainnet wallet. For this, go to Starkgate and connect your Ethereum wallet and Argent X wallet.
Select Withdraw tab, fill in the amount and click Transfer, then follow on-screen steps in your Argent X wallet.
IMPORTANT:
1. Transaction from L2 to L1 may take several hours (can be 7-9 hours, depending on the network state.
2. If you haven't selected Use the automatic withdrawal service by SpaceShard when filling in the amounts, you would need to confirm the transaction on the recipient wallet side. For this, when the transaction is fully complete on Starknet, go to Starkgate and connect your receiving wallet. You will see a dialogue box pop up in the top right corner, click Complete transfer and pay the Eth gas fees, the transfer should complete in a few minutes after that.