SEO - Any expertise on getting better search ranking

I’ve been experimenting with Google’s Custom Search API to see how my new business ranks for various keywords that are included in the site’s meta tags. Ultimately like to build a report using this to attract customers.

I have a quick form to test the API and tried it on various domain and key word combinations - here are the results (based on limit of search to the top 10):

https://sphere-innovations.com.au not found in the top results for ‘web design’.

https://tiddlywiki.com/ not found in the top results for ‘wiki solutions’

Clearly both my site and TW site could use some Search Engine Optimisations - so I thought maybe there would be some expertise here that could help ???

Cheers
CB