Yes, that true..! Choosing domain is really important for Search engine optimization. Look for higher ago domain similar to the competitor. use keyword in domain name will gain the bonus of exact match keyword. thanks for sharing..

bro try to make your site resposive , fast loading site, do onpage seo, create some high backlinks from high authority sites don't spam , give social signal , update your old posts

hope my answer help u

there are a lot of things which need to do for optimization.