There are a lot of search engines out there, althought Google is maybe the most used one. You can change your main search engine in the options.

Android 9
Step 1:  Open  Chrome
Step 2:  Open the  menu
Step 3:  Open the  settings
Step 4:  Tap on  Search engine
Step 5:  Choose a  search engine
  1. Open Chrome
  2. Open the menu
  3. Open the settings
  4. Tap on Search engine
  5. Choose a search engine

Android Instructions
Read more