It's upto you like what you want to do. I mean you took 4 years gap after graduation then it would have been for some reason right?
Anyways coming back to the topic, you can apply for jobs and then you've to be super brilliant in order to impress them in the GD AND PI rounds. You've to impress them in such a way that your gap gets overshadowed. Or else if you want to go for further postgraduation, then you can go for MSC, MTECH, MIS or MBA too. Find the corresponding entrance exams, start preparing for them, crack them, and you are there.
Best wishes. Thank you.
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