That's why having a responsive website is so important for small businesses, because if your website is not optimized for mobile users you are missing out on potential clients.
Google rewards mobile-friendly sites.
This is important for your search engine ranking. Since 2018 Google started using Mobile Indexing first, meaning that the mobile version of your website should be your priority.
A better user experience leads to more conversions.
Having a responsive website means that visitors can easily navigate your website without having to zoom in and out and get frustrated in the process. Getting this right leads to longer website visits and higher conversion rates.
Keep your eye on the future.
With more and more new devices coming onto the market, whether it's wearables, foldable screens, or TVs, by having a good responsive base it becomes easier to adapt to future needs.
So grab your phone and go through your website. I bet you can find a couple of things that need to be adjusted to give mobile users a better experience on your site. Good luck!