#1 - you can´t. Because with WISH-clauses you use a verb tense before the actual time.
I wish that I had today off. (it means that I am working today).
In similar ways, at the time you were watching the match Germany X Korea you could wish that instead of Korea it was Brazil that were playing against Germany, so you could say "I wish Brazil had faced Germany, not Korea." (it works to the actual event, the current one - the play that is happening at the moment.)
The match is happening today, indeed "right now".
But in this case, I think it´s more appropriate the use of "I´d rather..." (eu preferiria/preferia [que]...)
I'd definitely rather Germany faced Brazil.
To express the opposite you would use:
I´d rather not see Germany playing agains Brazil.
I´d rather Germany not to play the Brazilians. (here I went a bit informal "not to play against the Brazilian squad".)
Read the following and see whether you agree with me or not!https://www.ef.com/english-resources/en ... real-past/
This is my point of view; obviously, others may interpret in some other way. So let´s wait for further comments.