Not the search engine. The Android app has a feature called App Tracking Protection that blocks trackers in other apps, akin to PiHole, but run on the device.
Essentially, It really isnt that hard.
But
A) there is no unified project for the masses.
B) it is very hard to create a universal search engine that gives you needed info for something extremely unexpected like "reggae feline flames scanner" .
Searx is basically a proxy. If you had an actual proxy.. you would achieve the exact same benefits. Its good for making it difficult.. or extremely difficult to tie a person's real identity, directly to their search query.
Another thing that searx does is sends your query to google. This is not good for privacy. But sometimes it gives you additional results.