Iād like to switch from DuckDuckGo to Searx for my searches. How can I add a custom search engine in Tor browser?
When you are on the page of the search engine, right-click the address bar and select "Add ā[website name]ā. It should now be selectable when typing in the address bar.
To make it the default search engine, go to Tor Browser Settings ā Search and you will be able to choose there.