You're confused because you seem to have no idea what you want - hence the open ended question of "which schools around the world should I apply to?" hoping that someone will give you some step-by-step recipe to follow rather than figuring out the specifics for yourself. The reason why I say this is because these kinds of decisions are SUBJECTIVE -- there really isn't a right or wrong answer either way, and the more open-ended your question, the less answers you're really going to get other than getting people projecting their own biases and opinions onto you.
If you really have no clue what schools to even look at, I suggest starting with the various rankings publications. Get a sense for the different tiers of schools, and the kinds of career opportunities. GO THROUGH THIS DISCUSSION FORUM - there is tons of information here posted by extremely knowledgeable posters (not just my forum haha).
Yes, you don't want to waste time, but you should honestly also do the work yourself, rather than having other people do the research for you and tell you what to do. There's a wealth of info on this discussion forum alone. Take the time to read through it. You will be far more informed and educated for it, and then once you do, when you come back to ask questions, I can be a bit more helpful.
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