>how come scarlet witch still doesn't have a visa?
Refuge status?
>why are german police in Hungary?
No idea.
>how did zemo know he would be the only one in the room?
I'm guessing you mean when he's pretending to be the shrink. This is a bit of a leap, as you think there'd be armed guards regardless.
>how did zemo know bucky wouldn't kill cap?
We never saw what orders Zemo gave Cap. Pretending to kill but not actually killing could've been in those orders.
>how did zemo know bucky would get captured by cap?
His assumption was that the government, with their near unlimited resources, could catch him, not necessarily Steve.
>how did zemo know that cap would even have a vested interest in bucky? did he have footage of him not fighting him on the helicarrier?
It is common knowledge that Steve and Bucky are true friends, and Steve's role in the events in Winter Soldier would be more than enough to say Steve would intervene.
>why did war machine even care about falcon? after being in that high of an altitude for a while, he'd need to go down, he probably just could've ignored him
I mean, they weren't really that high up at the time, and Falcon does have some ranged weaponry.
>why didn't vision just shoot down the jet that cap and bucky where in?
Vision not doing enough was actually a real hard thing to justify, in all honesty.
>why didn't cap ask vision to meet him in the bunker?
Because a few minutes ago Vision was trying to stop him.
>how did zemo know that iron man would get to the bunker?
Honestly, this is a huge assumption and no real reason other than plot.
>how did zemo know that tony wouldn't have brought friends?
Same here, although, as long as there was Tony and Steve, it might not have mattered who showed up or not.
>how did zemo know that footage of bucky killing tony's parents in the middle of nowhere even existed?
Again, this might have been in the HYDRA dump from WS.