Good day, Ethanbrody. The responsive website design does not directly improve your SEO. You need to have a responsive design because you want your website to rank in search results. Google, for example, showcases different results for desktop and mobile devices. If your website does not utilize responsive design, you might be missing out on website exposure when people perform a search from a mobile device.

Often, website owners build two versions of a website, one for desktop and one for mobile. Then, they create redirects based on the device used to access the website. You don't have to manage two website versions if you have a mobile responsive design.

Since most web searches are performed from mobile devices, it is recommended to have your website mobile responsive.