For High Competition Keywords, SEO People are doing SEO activities to get a rank up, same thing is in Low Competition Keywords too.
Post your backlinks to high ranking sites related to your niche. Submit those keywords to web directories and places where "your keywords" section is available. Post your ads with those keywords.
try ti interchange links with other high ranking site with related to your site Like we Provide software development service we only prefer to exchange link with software development company
1. Onpage Optimization 2. Pure white hate Linkbuilding 3. Social Media Activites 4. Video Optimization I hope you can achive your target. Try this .