why do the champions league announcers almost always sound bored as eff to be there (in general, did not watch atletico)
That's how the euro announcers get down. It doesn't help that not all of the crews are at the matches, for the most part, they are in a studio in London, Greenwich, CT, or LA.
I feel like the EPL guys aren't quite as bad when it comes to being bored. Definitely not Arlo White but also some of the generic ones that are on the peacock streams
Arlo White is awesome and he knows his audience. He's also employed by NBC. A lot of those other guys, particularly ones you're watching doing Palace matches on Peacock, are lower tier announcers for Sky Sports and the BBC. I've also noticed most of those pbp guys and analysts are crazy old. They put the young guys in studio but not really in the booth.