SEO means that your website is optimized to get high on search on Google. While there is never any guarantee that your site will appear on the first page of Google, there are some things you can do to make your website as optimal for search engines as possible.
When you do a search on Google, you'll see a list of links to choose from. All of these links have a title, a link to the website and a descriptive text. What's there is what determines whether they click on one of your websites or not.
Both title and description must be relevant in relation to what the page is all about. And they must not be too long.
Use the most descriptive word (or phrase) as the master keyword and start preferably both title and description with that word (sentence) Also make sure that the master keyword is repeated 4-5 times in the text of the page.
When I create your website, I post both SEO title and SEO description for each page. However, you can change them at any time. Watching your changes live can take some time, depending on how quickly Google updates. So if you don't see it right away, you need to smear yourself with a little patience.