Domain name used to provide you the identity for you on the internet. In today's world it's very important to create the online website which works as the marketing approach of your brand. Assigning name to your website so it will help you to rank your website in SEO
Domain name popularity depends on factors like visitors, alexa, design, architecture, contents on the website , images and number of links pointing to your website, social site linking. You will need to review the all links connected to your website. You should remove the bad links that is spam links. Internal linking should be proper.