I can manage that
I can't manage all of that.
Das schaffe ich nie heute Abend.
There’s no way I can get that done tonight.
— Der Himmel über Berlin (1987)
I can do that on my own.
Das schaffe ich, ich bin nicht aus Zucker.
I can do it, I'm not made of sugar.
— Der Sommer mit Mamã (2015)
I can manage that on my own.