The most important thing in learning and mastering Data Science is about gaining experience. If you are not getting placed in some companies, the best way is to upskill yourself by working on projects. And for that, I will recommend you to enroll in an industry-recognized Data Science Master Program that will help you gain enough experience through assignments and projects.
Check out this video of one of our learners Sudhir who has been immensely helped through assignments that we offered.