Future of Flutter Developers in Job Market!

Im a Fresher and having 4 Months of Internship Experience and Learning Flutter from 1.5 Years in Collage! I Have Some Questions:-

1. What is the Maximum Package of Experienced Flutter Developer?

2. Have we need to learn more related technologies like React-Native, Android Development using Kotlin etc. to be employeeble in market?

3. Any More Suggestions and Recommendations from your side is appreciated!