The first step to finding SEO keywords for your website is to think about what kind of information your website provides and what kind of keywords would be used to search for that information. You can use a keyword research tool like Google AdWords Keyword Planner to get ideas for keywords related to your website.
Another way to find keywords is to look at what your competitors are ranking for. Use a tool like the Semrush Keyword Gap to research your competitor's keywords. You can also use Google's Keyword Planner to find keywords that your competitors are bidding on.
Once you have a list of potential keywords, you can start optimizing your website for those keywords. Make sure to use the keywords in your title tags, meta descriptions, and throughout your website's content. You can also use structured data to help your website appear as a rich snippet in search results.