If you want to set up ss tracking for GA4 and UA, then yes, you need to set up GA4 and UA. However, if you want to set up only Facebook CAPI and use Data Tag/Data Client to send data from web to server, you don’t need server UA or GA4.
Regarding User Data Parameters - you do not have any personal user data (like email, first name, last name, etc.) if a user is not logged in to your site. So no personal user data can be sent to FB