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?