I can't believe people still put hope on this song to smash. It's not gonna do well.
The obvious sign is that it's only reach top 5 in 2 major markets - US and Canada, out of top 10 in Australia, sitting at #90 in UK

. It's already declining everywhere. A typical smash by Britney doesn't have this behavior.
The song is just not good enough.The verse is blank. The chorus is childish. Britney vocal is over autotuned and filtered, I can barely hear her voice. The beat is not infectious enough. The only bright side is the bridge rapped by Iggy.
I'll wait for her second single.