Correct me if I am wrong, but from what you have said the prayer requirements were given to Abraham which were passed down to the present day Ulema of Mecca which we should all follow.
We have no confirmatory verse of the Quran that the method of prayer is what is being done there.
Misunderstanding of words sujood, qibla, zikr, mansak etc
Sajdah = Prostration = Complete submission = Willful obedience = Utter humility = Adoration = Utmost commitment to Divine Cause = Humbling one's own self.
Rukoo’ (Bowing) and Sajdah (Prostration) are not confined to the ritualistic physical motions. They convey a more sublime message of being humble and submitting to God’s Commands.
Zikr = Reflection = Remembrance = Observation = Reminder = Remembrance = Commemoration = Raise in degrees = Celebrate = Magnify = Give eminence = Taking to heart = Keeping in mind.
mansak from Nun-Siin-Kaf = to lead a devout life, be pious, be godly, worship/serve God, sacrifice, slaughter an animal by way of sacrifice, act of worship/servitude, performers/observers of such acts, rite of devotion, to wash and purify, to apply oneself.
Correct understanding is not rituals, but how to follow Allah correctly:-
2:128 “Our Lord! Make us submissive to You and of our descendants a community submissive to You. Show us the best ways to serve You and enable us to make amends. Surely, You are the Absolver of imperfections, the Merciful. [2:186, 2:286]
If no form is given in the Quran then we are just following the apparent sunnah of Abraham, which is older and hence much more unreliable than the sunnah of the last Messenger. No reference in the Quran for following other than the Sunnah of Allah-THE QURAN.