In addition, what you need to do is: improve your oral and writing skills during school. Have the opportunity to increase scientific research ability, even participate in research and publish articles (not necessarily the first author).
In addition, the materials for going abroad are: transcripts and purpose statements. When applying, you should apply for a doctoral program, not a master's program, and you have a better chance of getting a full scholarship (foreign doctoral students get a full prize, and master's students rarely get a scholarship. Because training doctors is a quality symbol of research universities).
Work hard and ask me questions. My email address is agostic@gmail.com.