DuckDuckGo Privacy Essentials add-on:
Changes your browser search engine to DuckDuckGo Search, along with other privacy benefits such as tracker blocking, encrypted website connections (where possible) and a privacy grade for each site you visit.
Set DuckDuckGo as the Default Search Engine
Current Versions (Version 79 and Above):
Click the ... icon at the top right
Click Settings
Click Privacy and Services in the left sidebar
Scroll down to the Services section and click Address bar
Click the dropdown menu beside Search engine used in the address bar and select DuckDuckGo
Older Versions (Up to Version 44):
Click the ... icon at the top right
Click Settings
Scroll down and click View advanced settings
Under Search in the address bar with select Add New
Select DuckDuckGo and click
Add as default!
Set DuckDuckGo as the Homepage
Click the ... icon at the top right
Click Settings
Under Open with select
A specific page or pages
Select Custom and enter
https://duckduckgo.com in the input field