focus keyword for homepage built on wordpress

Hello yall, I was tryna find a way to add focus keyword on my website homepage, its built on WordPress. and fyi i dont have a certain page set as my homepage. on my website its set as "Your homepage displays Your latest posts" so there aint no solid homepage where i can play with all these settings. yes I can still change the meta title and desc thru wp settings and yoast but no option to change focus keyword or set one, i can do it for posts tho but not for my current homepage.

please help a man out.

Make a landing static page instead, as simple as that,
If you want to display the latest blog posts on the page, you can include them after some content, you don't have to use the default WP listing,

You can use page builders for that, they would make it easier overall, Elementor, WPBackery, Divi & Beaver are good & simple choices,
Depending on the theme you're using and the page you're planning to build as well, sometimes Gutenberg with some CSS code can do the trick