There are a lot of options that you can make, depending on your ability to technology:

 - https://btcpayserver.org/: The best way, gives you a lot of options, you better try them.
 - https://coingate.com/bitcoin-pos: It is an excellent alternative and you can withdraw money to your account in addition to many options.
 - https://bitpay.com/: One of the worst options.

Did I understand your point exactly? Many services offer you this feature.