Google Ads does not affect your SEO directly, although it will affect it indirectly if your Google Ads campaign directs more traffic to your website through clicks on your ads. If new people are coming to your website, clicking through more pages, and spending time on each page they visit, Google will positively incorporate these engagement signals into how it ranks your page. However, if people who come to your website leave very quickly, or do not click through to many pages, Google will interpret this as a negative ranking signal and adjust your place in the search results accordingly.