Dortmund scores an average of 2.5 goals per game in the last 10 games, so we can assume that with such an opponent as Schalke, the figure will be at least two goals. But I don't think that now anyone cares about goal difference and secondary statistics, especially when there are important games in the Champions League and there is still a long distance to the end of the championship that will require a lot of strength.
That's right, this week is a busy schedule for Dortmund and I think they can win with an average goal alone which is good and Dortmund doesn't need to play hard to score many goals. Coach Eden Terzic must be able to work on the stamina of his players so that everything is kept safe and stable in every match that will be played later. Player rotation and long-term implementation must be maintained by Dortmund in order to get maximum results.
By the way, I remembered my idea that Dortmund will play either in a great mood after reaching the 1/4 of the Champions League, or in a terrible mood after relegation. In both options, they should play well. Despite the fact that Schalke in recent games almost does not concede goals, theoretically they should return to the average result in the season - almost 2 goals per game. Perhaps I will bet on the victory of Dortmund with a handicap of -1 and odds of 2.46.
The handicap bet (-1) for Dortmund is quite good, considering that they certainly won't be able to score many goals against Schalke this week. However, Schalke really rarely conceded in their last 5 matches in the Bundesliga and only conceded 1 goal. On the other hand, with a record like that, isn't it too risky if you take the handicap (-1) for Dortmund to win, maybe if I may suggest it's better for you to take a handicap bet (-0.75) at least if Dortmund wins with a narrow score of 0-1 or 1-2 you can still get a half win and if Dortmund wins with a score of 0-2, of course you are safe with a full win in the bet.