Even when paying for search ads the App Store still seems rigged.

Here's my app with real reviews which is running a search campaign with the keyword "chess". My app is called chess so why can't I get ahead of a 3 star app with 18 reviews. Mine has 1000s of reviews and is rated 4.5 stars. It's like there is a lead brick attached to mine and surely the whole point of search ads is to improve keyword search. I don't want to waste money on search ads if it doesn't work, but why is my app below that one anyway?

Even when paying for search ads the App Store still seems rigged.
 
 
Q