Yes, definitely changing themes in your website will definitely affect SEO ranking as these themes alter your site’s loading speed, usability, user experience, content delivery, etc. as these all factors influence your SERP these factors affect your SEO score.
Want to learn all the pro-tips in boosting traffic to your content and thereby succeed in your business, then check out the SEO course from Intellipaat.
Also, watch our YouTube tutorial video on SEO from experts to help you get started.