Advice on profile building for MS

I'm considering applying to MSCS programs in the United States, Canada, and the European Union for the Fall of 2023. I majored in electronics but want to get a master's degree in computer science or data science. What kind of prerequisite courses must I take? Are there any legitimate credential programs (similar to community colleges in the US) that I may enroll in? How do I create a good profile? What is the optimal profile for someone who does not have a CS degree? Also, if someone has converted their master's program from another major to CS, can you please share your profile/experience? #masters #ms #Canada #USA #Germany #MSCS #datascience #DataAnalytics