Colleges know that sometimes students end up with brand new guidance counselors. They also know that counselors at international schools may not be particularly familiar with the application process of US schools. I would speak to the head of guidance, or the head of your school about your concerns, but not worry too much. International students for the most part compete against other international students. Your application is not going to be dinged because of this person’s recommendation. Yes, if the previous person knew you well, they might have written something that made you shine, but most kids don’t have that opportunity. Follow up and make sure your transcript is sent, along with a profile of your school (and a translation if it’s not in English) - that’s the most important part of this person’s report. Pick 1 or 2 teachers who know you well to send recommendations. You’re an international student, so they will care more about YOUR ability to communicate in English.
I would not write a letter for the counselor to use, but would instead see if another counselor can write something, or the head of school. If you write it, and the voice is different from everything else the counselor sends, that will be a red flag.