[user104658]

I use Plex but it's not like a Kodi box / stick, you don't really use it to stream from external sites, it's for watching stuff on your own media server. I basically have a "server" (an old laptop) that's on 24/7 and I download to that and the files automatically get added to the PLEX media library, and then plex on the TV just works similarly to something like a "personal Netflix".

If you want Kodi-style streaming from "unofficial channels" you pretty much need Kodi, which I don't think HAS a SMARTTV app, so you would need a kodi stick or box. I think possibly you can also run Android-based Kodi on a phone or tablet or whatever and then cast to a smartTV... I'm not sure, I haven't used Kodi for ages, since before I got a smartTV. Before that I had an oldschool LCD non-smart TV and a home made RasberryPi3 Kodi box... But I find torrent+PLEX far more reliable than dodgy Kodi streams.