How do I turn off autocomplete?
If you're referring to the autocomplete suggestions on duck.908453.xyz when searching, you can turn this off by going to https://duck.908453.xyz/settings and turning off "Autocomplete Suggestions”.
If you're referring to the suggestions when performing a search in the DuckDuckGo mobile app, you can turn this off by going to Settings > Private Search and then turning off "Autocomplete Suggestions" and/or "Recently Visited Sites".