we (traditional)muslims believe that we need Sunna of Prophet Muhammad PBUH to understand the Quran followed by ijmah etc, there is a complete chain on how to reach a conclusion about understanding, starting from Sunnah and hadith
First of I am only unblocking you for this thread as it might help you and might save your soul.
Second I fixed the we muslim part in your thread
Third there is absolute no proof other than what the mullahs have told you that you need the "sunnah of the prophet" to understand the Quran. No where does the Quran say this, the Quran explains itself. It needs no one!
Fourth, there is no such thing as ijma, this is just some made up BS of the moulvis to justify their nonsense. If you read the Quran, when ever the Quran talks about the majority, its always in a negative manner or sense. And what Ijma is there between these sectarians anyways? These sectarians still cannot come to an ijma on how to and where to keep their hands in their namaz, let alone anything else
Your own detailes or short explanations in simple words will have a better chance of convincing others
Let me assist you here, what all you have mentioned, the Quran is void of it, there is no mention of such a thing as the five pillars of Islam. I challenge you to find me that phrase or something even close to it from the Quran. Hell forget that find that phrase which traditional Muslims utter night and day. Allah hu Akbar. Guess what that is also NOT in the Quran, the closet you will get is Allah hu Kabeer.
So lets look at this rationally. Namaz the one thing that is drilled into our head night and day, that you can pretty much do anything but as long as you keep up with Salah you will be ok and end up in heaven. Some "scholars" going as far as saying that a rapist and murderer who prays namaz is better than a good person who does good deeds but misses one salah. The most important pillar of Islam, something if you abandon for a particular timeframe you are out of the fold of Islam. The thing Angels will come in the grave and ask you and torture you if you didn't pray, then on the day of Judgement, the first thing Allah will ask you is about this namaz. So pretty important right. Seems like it!
Only one problem though. The Almighty, The All Knowing, The Hakeem forgot to tell us how do perform this oh so important ritual, forget about performing it he even forgot to tell us how many times a day and what to call them. And if you're thinking thank god, these Irani mullahs ( bukhari, Tirmizi, Hanbal etc etc ) remembered 200 years later that oh crap we need to tell Muslims how to do this daily namaz and wrote it down in the hadith. THEN you would be wrong again. Because in the entire corpus of the hadith you cannot find one single hadith where this daily namaz is mentioned in detail and step by step, on what to do, what to recite, what position to take from the takbir to the salam. NOT ONE!
SO now what is a person to do? Allah forgot ( Nauzubillah ) how to perform this most important pillar of Islam and now these Irani hadith collecting Imams have let us down? So what shall we do!!!!
we perform namaz the way we do is because we believe that this is the way it has to be done passed on to us via hadith and scholars' interpretation of Allah's Orders
As mentioned earlier not Allah's orders nor in the hadith. You learned how to do namaz from either your parents, dada, dadi or qari saab And they learnt it the same way themselves too. I've put a simple challenge out for many years now which remained unfulfilled. That out of the billion plus Muslims, find me one, JUST ONE. Who learnt how to do your namaz from reading the hadith. Pretty simple challenge isn't it.
if i didnt post any hadith doesnt mean such hadits or Quranic interpretations dont exist
Well if they did, 1001% you would have posted it. Don't take it in a negative way but 99.9% of people who come here to defend hadith tooth and nail haven't actually read any hadith, if any at all! They all believe that such hadith exist, because they have been told that, when in reality they don't. Now don't go googling and get me some hadith just to prove a point in which one part of your namaz might have been mentioned. Dabbu heard from Bablu heard from Ibn Dhimkan that he heard from Ibn Fulan that he saw the Prophet standing for prayers while it was raining and he was smiling. ( If you haven't read any hadith before, this is how they are "narrated" and nobody knows who babul, dabu or Ibn Dhimkan is??? But we are to believe what these people allegedly heard and saw)
Challenge is to find conclusive hadith detailing the namaz.
afterall its you disagreeing with billions of people's belief
6:116
If you were to obey most of those on earth, they would lead you away from Allah’s Way. They follow nothing but assumptions and do nothing but lie
And all of the above pretty much applies to all of the imaginary so called 5 pillars of Islam. Your Zakat, Your Hajj, Your Roza, Your namaz and your Sahada.
. Mic drop moment. 
On Your First Point:
