How to build profile to get admit into top colleges?

Currently I completed bachelor's in tier 3 college with 8.8 CGPA in stream of information technology and currently I am working in a company as full-time software engineer. I want to do ms in 2023 fall. But, with in this period of time i want to build my profile to get admits in top colleges can any one help me or suggest me some activities to get into top colleges like internships, publishing research papers or any extra activities.