Is link building the only part of SEO I should be focusing on?

While link building is one of the most important ranking factors in SEO, it’s not the sole factor. You should also focus on on-site optimization, such as making your website secure with HTTPS, be mobile-friendly, have a quick website loading time, implement schema markup, have a proper architecture and, most importantly, deliver quality content. You can also build a powerful social media and location-specific presence to improve your rankings and get better traffic.