Hi @bremilya, i am get similar trouble. This steps worked for me:
Get copy user profile directory (c:\Users\username\AppData\Roaming\Opera Software) from your friends or other PC, where is google search enabled. Put copy files from step 1 to you current PC, where installed yandex search engine as default. Run Opera.Do more on the web, with a fast and secure browser!
Download Opera browser with:
- built-in ad blocker
- battery saver
- free VPN