Creating unique dynamic URLs for my Firebase website?

This is a very newbie question, but I'm creating a website using Google Firebase & vanilla JS. I want to create a website where users can create their own collections of movies (which they search up from a movies API), and make their own lists, but also be able to search up their friends and see their collections.

So far, I have some individual user functionalities completed. They can make & customize their profile. The next step is to make functionalities so every user can make their movies collections and whatnot, which I can do.

What I'm wondering is how will I eventually hook it up so it creates a unique URL for each person and their movies collections? For example, a user is able to directly go to https://www.example.com/userProfile?uid=314159, etc. What tools or concepts do I need to learn to go ahead with making a website like this?