Yes, the WordPress theme you use can affect your website's speed. A faster theme can help your website load faster and improve your user's experience. A slower theme can make your website take longer to load and may frustrate your users.
There are a few things to consider when choosing a WordPress theme for speed. The first is the size of the theme. A larger theme with more features and code can take longer to load than a smaller, simpler theme. The second is the code quality. Poorly coded themes can be very slow to load. Make sure to check reviews before choosing a theme to ensure it is well coded. The third is the number of requests the theme makes. A theme that makes a lot of requests to the server can slow down your website.
You can improve your website's speed by choosing a faster WordPress theme. Pay attention to the size, code quality, and number of requests the theme makes to ensure the best possible speed for your website.