If you want users to be able to publish content on your site(by creating posts), you’re going to need some extra functionality to allow front-end posting. Either a plugin or your own customization if you believe the existing plugins are too bloated.

I hope the suggestions offered in the previous message guided you in the right direction. I see that you’re building a website for vendors to create and sell their own products. Feel free to check out our official product vendors plugin as well:

• https://woocommerce.com/products/product-vendors/?aff=10486&cid=1131038
• https://docs.woocommerce.com/documentation/plugins/woocommerce/woocommerce-extensions/product-vendors/

We haven’t heard back from you in a while, so I’m marking this thread as Resolved.

All the best!