@jefry03 Only pre-configured search engines can be set as the default one.

@strikker Go to the page and do a long tap on the search field.

I have been waiting for this to come for a year already. I haven't really found a smart way of using Ecosia without going to its website first. The whole idea of using Ecosia is to produce less carbon emission (by using renewable energy sources) and to use the money to help forests. If I have to first type/search for Ecosia (an extra search/energy consumption), it loses partly its purpose.

It's interesting thing, that you can add custom default Search Engines in any Chromium browser (Chrome, Vivaldi, Brave), except Opera.

You are accidentally pressing F1 when on your desktop.

For this to happen, both Opera and Ecosia need to want it, and it has to be profitable for both. So did you already contacted Ecosia? What they say about it? Di dthey already try an agreement with Opera?

I gave up on that approach and added shortcuts to other search engines on the Speed Dial. If I want to search, I open a new tab to get Speed Dial and click the link that I want to use.