I wish someone edits the question and deletes the body of question.
Sunnah is every rule related to worship, inheritance, business dealings, marriage, halal, haram, jihad, etc. sahih sunnah is revelation from Allah and only Allah can make something halal and haram. Rejection of Sahih Sunnah removes one from fold of Islam.
Ahadith are sayings of prophet, related to past nations (the story of people of Ditch, boy, monk, king and magician, story of zayd bin amr bin Nufayl who searched for religion of Ibrahim), grafting in agriculture , conversation with Aisha (i swear by rabb of Muhammad(peace be upon him)/i swear by rabb of ibrahim).
Musa b. Talha reported: I and Allah's Messenger (ﷺ) happened to pass by people near the date-palm trees. He (the Holy Prophet) said: What are these people doing? They said: They are grafting, i. e. they combine the male with the female (tree) and thus they yield more fruit. Thereupon Allah's Messenger (ﷺ) said: I do not find it to be of any use. The people were informed about it and they abandoned this practice. Allah's Messenger (ﷺ) (was later) on informed (that the yield had dwindled), whereupon he said: If there is any use of it, then they should do it, for it was just a personal opinion of mine, and do not go after my personal opiniondo not go after my personal opinion; but when I say to you anything on behalf of Allah, then do accept it, for I do not attribute lie to Allah, the Exalted and Glorious. Muslim 2361
Narrated Aisha: That Allah's Messenger (ﷺ) said to her, "I know when you are pleased with me or angry with me." I said, "Whence do you know that?" He said, "When you are pleased with me, you say, 'No, by the Lord of Muhammad,' but when you are angry with me, then you say, 'No, by the Lord of Abraham.' " Thereupon I said, "Yes (you are right), but by Allah, O Allah's Messenger (ﷺ), I leave nothing but your name. Bukhari 5228.