I disagree. But you can approach life however you like, there is no force in religion. If you want to say Quran says Quran should be studied without hadiths and explanation of the Messengers, you perish by your own creation with no basis in either Quran or reasoning.
Salah can't even be known in details without the Sunnah. None of us would see it all in Quran, although the interior reasoning of the Sunnah details is in Quran, none of us or maybe a few without being able to prove it to others, would've seen it.
2:118 - We have made
clear the signs unto people who are sure.
2:266 - Thus doth Allah make
clear to you (His) Signs.
3:138 - This (the Quran) is a
plain statement for mankind.
6:65 - See how
We display the revelations so that they may understand.
6:157 - So now has come unto you a
clear proof (the Quran) from your Lord.
7:58 - Thus do
We explain variously the Ayat.
10:5 - (Thus) doth
He explain His Signs in detail.
10:24 - Thus do
We explain the Ayat in detail for the people who reflect.
13:2 - He regulates all affairs,
explaining the Ayat in detail, that you may believe with certainty.
17:12 - All things have
We explained in detail.
19:97 - We have given you the Book (the Quran) in your own language so that you could
easily give the glad news to the pious ones and warn the quarrelsome ones.
27:93 - Praise be to Allah, Who will soon show you
His Signs, so that
ye shall know them.
44:58 - So have We made it
easy in your tongue that they may be mindful.
54:17 - We have made the Quran
easy to understand.
54:22 - We have made the Quran
easy to understand.
54:32 - We have made the Quran
easy to understand.
54:40 - We have made the Quran
easy to understand.
57:17 - We have made
clear Our revelations for you.
There are also many dozens of other verses such as 12:16 - "Surely in that are signs for a people who understand" - that claim Allah's works are so obviously of divine and miraculous origin that they, in and off themselves, are so clear as to obviate the need for further explanation.
Just look at all the verses above that say in no uncertain terms that Allah "Explains in detail". In no verses that speak of Allah's signs is it even remotely suggested that more explanation is necessary. That means nothing more needs to be said. Your position is utterly untenable. You. Are. Wrong. Period.