You should focus on five key on-page SEO factors to improve your rankings. The first factor is high-quality content. You should create valuable and relevant content that answers users' queries. The second factor is keyword optimization. You need to use keywords in your titles, headings, and body content. The third factor is meta tags. You should optimize your meta titles and descriptions to include relevant keywords. The fourth factor is internal linking. You can link to other pages on your website to improve navigation. The fifth factor is mobile optimization. You should make sure your site is mobile-friendly for better user experience.