Is the Quran sufficient?

According to God himself, the Quran is sufficient. God calls it sufficient in many places, and it is clear that it is the only thing we need to be guided. On the other hand, hadiths have contradictory reports which can be blasphemous and contradict the Quran frequently.

Here are a few references of the verses that prove the sufficiency of the Quran and deny the need for any hadith outside of the book of God: 6:114, 12:111, 11:1, 9:11, 16:89, 39:27, 45:6-8, and more