Pretty much every brand or app I search for finds a competitor first. Searching for "robinhood" turns up an unaffiliated cryptocurrency app and "macrofactor" turns up a competing diet app, etc. App store search has been broken for at least a few years.
Apple should remove App Store search ads altogether (I'm sure they won't). By definition they won't give you the app you searched for, because the keyword will be bought by a competitor or even a scam.
Do you mean the ad at the top? For me, the first result is always an ad which is mostly not the right result, and the second entry (the first actual result) is the right app.