The following exchanges allow DIRECT deposits and withdrawals from and to Polygon layer 2 mainnet.
This is the most simple way to onboard Polygon.
1.) Deposit your tokens to one of the exchanges,
2.)create Polygon Mainnet wallet(click)3.) and withdraw the tokens to your newly created Polygon wallet.
Please note that for some of the exchanges new users can not withdraw within the first 24hours of account creation.