I just use it for a week and feel the difference.
Magi has a free trial of 100 searches. Sign up and try it. I did, and when I ran out of my 100 searches, I went and got my credit card and paid $5/month.
When I tried DDG, I ended up back at Google within a week.
I can’t actually explain how it’s better, other than to encourage you to try it and see for yourself. If you run out of searches and don’t feel it’s better, then you can go back to DDG