No word floats without an anchoring connection within an overall structure. - Stanley Fish

Before the words slide into their slots, they are just discrete items, pointing everywhere and nowhere.

The word "essay" means to try out, test, probe. In the essay style, successive clauses and sentences are not produced by an overarching logic, but by association; the impression that prose gives is that it can go anywhere in a manner wholly unpredictable.

Know what makes a sentence more than a random list, practice constructing sentences and explaining what you have done, and you will know how to make sentences forever and you will know too when what you are writing doesn't make the grade because it has degenerated into a mere pile of discrete items.