How do you do on-page SEO?

On-page SEO is a very easy process and It can be done with fewer simple steps.
1. Right a good Title with keyword research and select the focus keyword.
2. Right the minimum 600 words of content with only 1% use of the focus keyword and try to use keyword in headings.
3. Give links to other internal and external pages. Genuine links are appreciated.
4. If you are using WordPress then Yoast and Rankmath two plugins are best for seo.

Use heading and subheading, focus right keyword; use Internal linking and external linking.

Use heading and subheading, focus right keyword; use Internal linking and external linking.
And use image with proper attribution. You can use some seo plugins like yoast which will help you to show focus keywords and mistakes which are in your content.
You can easily improve them.