Here is how you can change the default search engine used in the Microsoft Edge browser to any Search Engine you need. By default it will be Bing. You may also add your favorite search engine to the list.
Open Edge and click on the 3 dots at the top right corner
Click Privacy and services from the left panel
Scroll down and under Services click Address bar
Select The search engine you need, It will have Bing, Google, Yahoo and DuckDuckGo
If you want a different search engine, or remove any search engines from the list
Click Manage Search Engines
Click on Add to add a new search engine
Fill the values on the next screen
Search Engine – Give a name you like
Keyword – URL of the site without https:// or www.
URL with %s in place of query – Go to your favorite search engine and search for a specific word, opy the url of the search result page and paste it, now replace the word you searched with %s.
To edit it remove a search engine , go to the search engines listing page and drom the list click the 3 dots on the right side you will have 3 options
Choose edit or Remove