How to Migrate Your Website From Joomla to WordPress (9 Steps)

what about all the users i have registered in joomla? and what will happen with all the access level they are in? like registered, unregistered, paid accounts, manager, admin, worker, volunteers, etc??

Hello ,
Please what will happen to the joomla website after migration , i have not much experience with joomla, and i need to transfer content from joomla ( main domain ) to wordpress ( subdomain) but keep the joomla website alive is that possible with this method ? thank you