Concern about peertube and P2P

Hello! Im Trying out peertube and have some unanswered questions. Iv been having some troubles figuring out how to use that platform. One problem is that it takes much time to find an instance with open registration. But its Ok, not a big problem.

So I registered, but what is happening? Where is content from other instances? I cannot simply find my fav channels from other instances just by typing the name. But if you try to search with @channel@instance.name it surprisingly works. Well, may be my channel should be visible from other instances, right? Looks like not either.

But its not completely broken, some channels visible from X instance on Z instance, but on the other side Z channels on X instance undiscoverable.

Each instance also has different tranding and discover pages, which looks weird to me.

In other words, how do we know as content creators, if our channels can be discovered from other instances? And its not just about using Sepia Search (that only works if user knows what they are searching), but also displaying content on different instances in "Tranding", "Discover" and "Recently added" pages.

Another concern is about privacy.

We all know about P2P, and that when you connect to peers you reveal your IP address. How peertube protects users from stealing leaking their IP addresses?

Thank you! :3