Canonical tips?

Hi couldnt find a specific post that talks about this.

Anyone can help me? is it the best way to make google rank specific keywords in the page i want?
Im having trouble making google understand specific keywords go to specific pages,

In general is fine but some are just confusing.
Sometimes a keyword ranks on my homepage and after 2 weeks in my blog post.

I tried everything to make it rank in the specific page. But with wordpress i have no idea.

My homepage is in HTML and the blog in wordpress. any tips on what code or what should i write in my homepage?

Make do internal links for the keywords of the homepage to my blogpost for link juice?

ty in advance.