There is no clear consensus on how website builders affect SEO. Some say that website builders can actually improve your SEO, while others claim that they can hurt it. However, there is no conclusive evidence either way.
Website builders can be a great way to create a website quickly and easily without having to code everything from scratch. However, they can also limit your control over certain aspects of your website, which could potentially hurt your SEO.
If you're serious about SEO, then you may want to steer clear of website builders and build your website from scratch. This way, you'll have complete control over every aspect of your website and you'll be able to optimize it to the fullest extent.
However, if you're not as concerned about SEO, then a website builder could be a great option for you. Just be sure to do your research and choose a reputable builder that will give you the flexibility and control that you need.