Such a tool can give only a guide to which parties might represent your ideas best. I ran through it, it went into the direction I am deciding to, but not very

Such a tool can give only a guide to which parties might represent your ideas best. I ran through it, it went into the direction I am deciding to, but not very precisely. That is already the case because the questions can capture your intents only coarsely. For your actual decision, a lot of other aspects should play a role. In general, the party should have more weight than the individual candidate, but only so much. And especially, in Germany the government will consist of a coalition of at least 2 parties, probably 3 this year. While I do think that on the first order of approximation you should elect the party which represents you best, sometimes strategic considerations can play a role too.