Yes, it’s the most confusing part, if you want to discover Pixelfed accounts from other servers, you have to go to another server’s home page, then click on “Explore” which will show you popular posts by that server’s users.
The web version of Pixelfed does have a “Global Feed” page but that’s 99% Mastodon posts because the “Global Feed” is actually global relative to the whole Fediverse.
Lemmy is not in any way the safe haven it has been marketed as.
Marketed? Lemmy is not a company and there is no marketing department. Generally, what you know about Lemmy is word of mouth from people who used it before you. Not the result of a marketing planning meeting.
Watch live TV.
In my country (Australia) live TV is ad-infested and most programs are reality TV garbage, so I stay away from it. Freetube + Peertube works for me.