This is not kind of features that a joomla template can offer.
IMO, You can implement WHMCS https://www.whmcs.com/ and use it for payment, domain purchase and client area. WHMCS is a complete solution pack for client management, billing, and support for your online business. It is a very powerful automation tool that handles everything by itself.
Example this site: https://www.bkns.vn/ they’re using wordpress for front-end and WHMCS for client site