I'm sorry, but the US installing powers that are favorable to it is not a conspiracy theory. It's a conspiracy fact. How do you think Pinochet and others happened? It certainly wasn't organic (at least not entirely so).
Anyway, regarding the options, there's technically a few more like Jordan or other arab states, or a new organization arising (albeit in reality the US and others would intervene to stop them taking power). But beyond those quibbles I don't disagree with you that there's no good options, I'm just stating my belief that if we support organization X, it's because organization X is directly controlled by us or indirectly its incentives align well with our own.
> Well to some extent Hamas was the closest they got to that for decades.
Agreed fully, and that's one of the problems.
> I'm almost certain that stupidity and incompetence (and one might guess a good dose of corruption) rather than outright malice or imperialism were to blame for that entire disaster.
Why not both? Imperialism is a pretty stupid ideology, at least if one's goal is to keep one's country safe and powerful. If one's goal is to extract resources from one's own country at the cost of lots of bloodshed of your citizens and others', then it achieves the goal fine.