I reread your post and it appears you aren’t using the toilet plunger on it. Give it a try, being sure the drain you aren’t plunging is closed tightly.
I can think of one, maybe 2 times in the last 40 years that I got assistance while attempting to unclog a drain.
Just because they’re born knowing this stuff doesn’t mean they are motivated to remove themselves from a Lazyboy to assist us.
He may be in a lazy boy, but it is on the other side of the world. He has an excuse for this one.
I know what you’re talking about. lol