Solution 1 ：Using Polygon POS bridge (Have to pay the transfer fee on ETH chain)
1.1 Open https://wallet.polygon.technology/
1.2 Click Polygon Wallet
1.3 Select ETH，click Withdrawal
1.4 Confirm it's PoS Bridge, click Transfer
1.5 Waiting for about 1 hour to confirm. Confirm successfully, click Continue
1.6 Switch ETH network, click Continue
NOTE：The total cost of the transaction will be displayed at the Transfer overview. Please ensure you understand that this amount will be deducted from your send amount, make sure you have enough ETH on ETH chain to cover these transaction fee.
Solution 2 ：wETH->MATIC->Exchange (small amounts of ETH)
2.1 Swap wETH to MATIC on Metamask
2.2 Select an Exchange that support deposit MATIC
2.3 Get your MATIC deposite address by Polygon network
2.4 Transfer your MATIC to this address
It could save transfer fees on ETH chain.