How to ensure access restriction to WP pages?

Question

WordPress

Hello!
The task is to provide restriction of access to pages.
1) It is required to hide the content from unregistered users (there are a lot of plugins), but .....
2) is it possible to make a link to register immediately to a specific group (role) of users on the site (with access rights to the content)
Which plugin is allowed to make a URL for registration in a certain "role" on the site, who knows? (example: https://u.to/_uqwGA)

I need to send a registration link with an already defined role in an email...