No namaaz ritual in Qur'an; verses are patched together to give some parts of it.
No namaaz ritual in hadith: verses are patched together to give more parts of it.
Another punchline: you have to go to scholarly sources to put the parts together and then they, the scholars, have to add bits to it to get to a completed ritual.
But wait, one scholarly school of thought police does not agree with another, parts are wrong so they are all following their ancestors, which ancestor is up to them.
If you want to have a chance of getting into jannah, then follow the Qur'an which has all the details you require:
6:114 Say, “Shall I seek for Judge and Ruler someone other than God? He is the One Who has revealed this Book, well expounded in detail for you.” Those whom We have given the Book know that this is revealed in truth from your Lord. Be not among those who argue for the sake of argument.
As for ancestor worship= following what ancestors have given us as opposed to what MUSLIMS should be submitting to, following=true worship:
6:148 Those who associate others with God say, “Had God willed, we would not have practiced idolatry, nor would our ancestors, nor would we have prohibited anything.” So did their ancestors argue falsely until they tasted Our requital. Say, “Do you have any certain knowledge (that the human being is created without free will 18:29, 76:3, 90:10)? If so, produce it before us. Nay, you follow nothing but conjecture and you only run after guess-work.”
6:149 Say, "The most powerful reasoning, the final evidence, is with God. If He willed, He could have made all of you innately guided” (like rest of the creation that spontaneously follows Divine laws). [16:49, 41:11]
21:43 Do they have gods who can shield them from Our laws? Their perceived deities cannot even help themselves, nor can they be defended against Us.
21:44 Nay, We let these people and their ancestors enjoy the good things of life until the period grew long for them. Do they not see that We gradually reduce the land in their control from the borders? Can they prevail (against Divine laws)? [Every day on earth brings them closer to the end and the holdings of the great landlords are becoming smaller. 13:41]
21:45 Say, "I warn you on the strength of Divine revelation!" But the deaf to reason cannot hear the call, however often they are warned.
21:46 And if a breath of your Lord’s retribution were to touch them, they would say, “Oh, woe to us! Surely, we were wrongdoers!”