access certain pages with front end login

Hi. I don’t know if this is a place to ask, but I am running out of ideas.

I want to make a webpage that has a page that is visible only to logged in users.
I want those users to log in to front end. I don’t want those users to log into dashboard and the back end functions.
I will have users that dont need to register, admin will create username/password for them, therefore I only need a login form.

Which plugin would allow me to do this things?

So. access pages with passwords, front end login (so every frontend user could acces this page, is the same for all users…)

Thank you!