There are many open source "free" website design software like
joomla that can create a professional website but has a learning curve, it takes time to understand it. There are many factors that come into play if you want a successful website, which means you need to do
search engine optimization and
validate your codes.
As an experienced web designer and seo analyst, I would advice you to seek professional seo web design help.
Best Regards,
Daniel Chege.