I have a hisense H9E plus which has a redacted version of google play store. It does have es file explorer so I’d imagine there must be a way to side load apps. Just not sure if there’s a tutorial or something out there. From what little searching I’ve done, everything seems to be for tv boxes and tablets but nothing specifically for the tv OS.
I would just use the website. Go to play.google.com and see if your TV shows up in the list of compatible devices.