I have a lot of experience in academia, ranging from management to teaching to doing research and over a long period of time. In academia the only thing that i

I have a lot of experience in academia, ranging from management to teaching to doing research and over a long period of time. In academia the only thing that impresses is academic accomplishments. All the things that you are contemplating are unlikely to be of any value in the eyes of bureaucrats doing admissions. You don't mention whether you are still in your home country or have moved to another country. In addition to the many world class universities in the USA there are several very well regarded CS/SE universities in Germany and France. If you are determined to move to the USA you need to be aware that in order to succeed you need good English language skills. The cost of education (even with financial aid) is very high. If I were in your position, then I would choose to do a final year, capstone project/thesis which is very much in the field of data science. I would also research data science programmes being offered and identify who the course leaders are. Then with that information you would write tailored emails to them explaining what you are seeking, why and what you intend to accomplish. The personal contact and possible introductions could ease your path towards admission. The common aphorism "It is not what you know, it is who you know" applies to all fields, including academia.