In my opinion, accessibility is an area that rewards simplicity the best. On the web, you can solve the same thing in many ways. If you design with WCAG, you will have an opinionated guide to form your creative thinking.
In many scenarios, you can choose to create a straightforward solution. Leave a carousel out of your design and use a simple grid, eliminating the JS dependency and complexity. Usually, what is simple - in an HTML way - is accessible.
Of course, life is more complex. We often don’t have the freedom to decide, but designing and creating with a mentality that focuses on simplicity will spare you and your users a lot.