A lot depends on whether or not you are full pay. It’s much easier to get into boarding schools without financial aid.
Also prior overseas boarding school experience is very desirable. It shows you’re at least comfortable with boarding if not the US. Otherwise any away from home experience should be highlighted like summer camps.
Your initial post has some grammar and spelling errors in it TBH. I (and many people!) write posts on the cellphone where errors are much easier. Perhaps you too are on a phone! But for the level of schools you seek, this is not an appropriate level of English.
Apply to more schools for a better shot at success.