I'm sorry. This is the first time I used this forum. I was doing a search and ended up here. I thought the context was clear.
Anyway, using FireFox, DuckDuckGo, when I do a search, DDG says there are three bars on the upper right. Click, get the General menu, turn on "Opens results in new windows/tabs", Save and Exit.
After that, if I search and click on a link it opens in a new window (like I want).
If I close the Browser window and open it again, the setting is lost.