What are the areas to utilize your keywords to optimize website ranking?

What are the areas to utilize your keywords to optimize website ranking?

optimize the site rankings keywords plays the most prominent role but if we follow the methods like Keyword prominence, Keyword Density, Keyword placements and Keyword proximity.

One of the most important places to optimize use of SEO keywords in is in your content. That's because content is one of the top SEO ranking factors.
...
Key areas to use the Keywords to optimize the site ranking:
URL.
Title Tag.
Meta Description.
H1 Heading.
Text Content.
Image Alt Tags.