I save Bitcoin so that I can build a free school for poor children. In my country the schools are very rare because no one has invested in the school and the cost is very expensive
I kind of doubt this statement. Maybe there are places in your country where there aren't any schools, and even if there is, it's just grade school. I don't think there's a whole country where schools are very rare. It's understandable that places where people live in a primitive way as opposed to city people will have a lot less funds.
Another reason why I doubt that your statement is true is because you are here. That means you have an Internet connection, and a smartphone or a computer. That means you are in a civilized place. Obviously you're not from a first world country and have English as your first language. You're speaking in English, that means you have learned somewhere, it's gotta be in a school. I conclude that you have schools in your country.