As Multiverse said he wasn’t going to respond, I can address your concerns.
To point 1: Yes, the int’l acceptance rate DOES APPLY TO YOU. You are INTERNATIONAL, therefore that gives you a generalization of your chances. You cannot simply ignore it because you don’t like it.
To point 2: sure, you can try, but your competitors will have been doing these activities for all of their high school years.
point 3: Top colleges don’t want to see people take the SAT more than 2-3 times.
point 4: He is guessing based on your saying you are in the top 50%. That is just barely average.
5: you don’t speak very well grammatically, based on this post. Your words are often jumbled. For example, “I know how to speak grammatically well english” is a clunky sentence- a native English speaker would say “I can speak gramatically correct English.”
point 6: You simply don’t have many ECs, whereas applicants that will be successful will have involved themselves and demonstrated leadership and initiative.
point 7: Just because your college is different from the american colleges doesn’t mean the rules don’t apply to you. All int’l schools are going to be different from american colleges.
8: Yes, you have a basic grasp. But you miss some things. Your test scores won’t get them to ignore your grades- you have to be able to prove to them that you can handle college level work. Besides, you cannot say that your essays will be amazing- you haven’t written them yet. In addition, as pointed out, your english is faulty and that will show in your essays. While I am able to understand what you write, it is not great english.
Yes, ultimately Harvard will decide whether to admit or reject you. But we are telling you that it is VERY likely you will be rejected.