Dear Jayu !

I hope you are doing well !

After diploma in computer science you work as a MIS operator or executive it is okay .Now days lots of company hire data analysis ,Data Analysts ,Businesses analysis ,etc... and you are mostly experience person so i recommended go through some advance course like data analysis where it is include data base, litlle bit python ,tableau, advance excel and many more .It will helpful to you for your career growth with job scopes.

I hope it will helpful

Thanks