Hi Karambir,
I had a client contact me about this recently. If you can’t find a template for your exact business category, don’t worry, a similar one is fine. However, the most important thing to do is make sure the template is SEO friendly. If it isn’t, you might have to tear it down and start again from scratch. Here’s an article I wrote about it, in more detail: https://www.seoforwix.com/post/how-to-choose-an-seo-friendly-wix-website-template
Cheers,
Tom.