The one-word answer to the question about Duckduckgo safety is ‘Yes’. Duckduckgo is a safe browser that offers personalized search results, thereby significantly reducing the chances of searches losing their way in a maze of several similar search results. Duckduckgo is a stripped-down search engine because it focuses on a private and quality search experience without the frills of too many features. The attitude reflects the importance the search engine attaches to safety and privacy.

Duckduckgo is perhaps safer and ensures better privacy than other search engines like Google Search, Bing Search, Yahoo Search, etc. Therefore, those still wondering is Duckduckgo safe to use should shed their inhibitions and use the search engine to get hands-on proof about safety. 
https://businessupside.com/2022/05/09/is-duckduckgo-safe-know-about-the-safety-and-privacy-of-duckduckgo/