I might not be able to provide an in-depth response, but here are some recommendations.
Conducting KEYWORD RESEARCH relevant to your market is essential.
Here are some free tools I find useful for this purpose:
Keywords Everywhere (available as a Chrome extension)
Google Keyword Planner
WordTracker
Continuing in a mini thread.
It was not a waste of time to me. I sell female shoes and bags. What’s the best SEO to use please.