When are complicated matters after Salat al-Istikhara considered an indication that the matter is not good, and should one abandon a purchase if there are complications from one's side, or complete the procedures?

Whoever seeks Allah's guidance concerning a matter should proceed with it, for whatever occurs after seeking guidance, whether action or inaction, is good. The difficulties that obstruct your path are not a sign that you should not proceed with the matter; rather, go ahead with what you intended, while taking the necessary means and relying on Allah. However, if there is a complete aversion and lack of desire for the matter, then this is a sign that the good lies in abandoning it.