I use the ancient Windows 7. And a slow machine.
Duck Search works pretty well. Several months ago when I encountered Disroot I switched to Searx. Without wanting to offend sensibilities, I've switched back to Duck.
When I returned, they seemed to have broadened their search base.
when I used Searx, I often found results limited, and/or somewhat irrelevant.
I'm not a developer. I'm testing the waters. I find it necessary to believe what they say about privacy.