WooCommerce Checkout without making payment rather select Invoice Me to make manual payment or payment later for known customers. This option is available only for selected and logged-in customers.
Invoice Me plugin is very helpful for a virtual online market, digital product selling market, etc.
Online Documentation is here
https://rmweblab.com/documentation/plugins/invoiceme/
Demo here:
https://plugins.rmweblab.com/checkout/
user: demo
pass: demo