Freehit APK: there isn't one
No APK, no app store listing, no price. Freehit is a website that plays in a phone's browser, and the only "install" it has is the home-screen icon Chrome offers, which downloads nothing. Any file called a Freehit APK was made by somebody else, for their own reasons.
The free route: add Freehit to the home screen in a tap or three.
Why no APK
An APK would add a download, the unknown-sources setting and a file to keep updated, and it would play the very same channels the browser already plays. The site gains nothing from one, and a reader gains nothing but risk. The browser version runs full screen from its icon, needs no permission and is always current, because it is the site itself.
If a file was already installed
Uninstall it from Android's Settings, under Apps. Then open freehit.st in Chrome: that is the real Freehit, and it never asks for a card, a login or a permission. If the file demanded any of those, it was not from here.
Questions
Someone is selling a "Freehit premium APK"
There is nothing to sell. Freehit has one version, the free one at freehit.st. Pay nobody for it.
Does the browser version work on a tablet or Chromebook?
Yes. Any device with Chrome, Samsung Internet, Firefox or Edge opens freehit.st and plays the matches; the home-screen icon is a phone and tablet convenience only.
The player is black on the phone
Allow a few seconds, then tap play once. Still black? A content blocker, a VPN or a private DNS can hold the player's scripts back; switch it off for freehit.st and reload.