Hey I am wondering if it is possible to change the type of a club after it has been creation, from Public to Open to Paid etc?

Yes, you can change the type in the ACP

Manage Club->Edit Club Settings, on the main club page ☺️

Hey there is no option to change the club type here. I want to make it a Public Club not an Open club.

Found it in admin portal, thanks Daniel.

Glad you have what you need :)