best approach to improve seo for small business?

If you serve customers locally, start with the Google Business Profile, not the website. Correct category, hours, photos, and ask every happy customer for a review. That's where most small business leads come from. Then the site: one page per service with the town in the title, a clear phone number, and fast enough on mobile. Blogging can come later, it's the slowest return of the lot for a small business.