Simply click on the "My Account" icon, select "Withdrawal", choose your preferred withdrawal method and fill in the requested fields.
The withdrawal request is submitted when you click on "Withdrawal".
Important: Only payment methods that have already been used for a deposit at least once can be used for a withdrawal. Withdrawals via Bank Withdrawal are always possible if you deposited with a payment method that does not allow for withdrawals.
If you are unable to request a withdrawal from your account, please refer to this article for more information.