Tech Visa sponsored jobs

Hi All,

I wanted to see the best way to get a visa sponsored job

Right now, I am completing my masters. Prior to that, I have worked as a Full-stack Software engineer.

I am applying to jobs and not getting a lot of leads on that.

I am however getting Linkedin messages for interviews (still not great)

What is the best strategy to get interviews and eventually get a job?

Is it better to go to a recruiter agency like Robert Walters or do col emailing with recruiters, managers and employees?