1. The basics: forget plot, but remember the importance of 'situation'
I won't try to convince you that I've never plotted any more than I'd try to convince you that I've never told a lie, but I do both as infrequently as possible. I distrust plot for two reasons: first, because our lives are largely plotless, even when you add in all our reasonable precautions and careful planning; and second, because I believe plotting and the spontaneity of real creation aren't compatible.
A strong enough situation renders the whole question of plot moot. The most interesting situations can usually be expressed as a What-if question:
Link to balance of article https://www.theguardian.com/books/2000/oct/01/stephenking.sciencefictionfantasyandhorror
Interesting to read how successful writers work. This article probably doesn't belong here, but at least it won't get buried in a hurry.
The corpse lies rotting in plain view until time kicks remnants over the body, only to be discovered in years hence by another wandering this path who accidentally stumbles over the hidden secret of Stephen King.