I suggest an official WooCommerce plugin,

https://woocommerce.com/products/product-vendors/

With it you allow users to become sellers. They can sell products as a marketplace.

The plugin has a number of well thought out points. You can check the link.

The only problem is to be expensive, like most official WooCommerce plugins. But I think it’s worth it, because it is developed by the same WooCommerce team and have their support.

Regards,