The problem was, that when i was live recording (without monitoring at all), no instrument had their own tracks. When i solo'ed the guitar track in playback, you could stille hear a little of the drums in the background and vice versa.
I was worried, that this would make the mixing not work, or something like that, and since im quite new to recording i wanted it to be as easy as possible. I was then told, that it only matters if it matters to me, and it does not. To conclude, my problem is solved, but other people with the same kind of problem still needs a little help.