I’ve removed the link from your post, @koushik72, because it is not necessary in order to answer your questions.
If you are new to SEO, I would recommend that you read Google’s “Search Engine Optimization Starter Guide”, which will help you check that you’ve done all the necessary tasks correctly.
If you look around the Marketing section of the forums, you’ll find we have a number of threads discussing ways to gain traffic. You might get some more ideas by reading these. For example: