You can theme Kodi to look pretty close to Netflix, but not out of the box. As my library doesn’t update too often, I can live with the slower refresh as it’s a sacrifice I am willing to make for the ability to play everything in my library.
Really, for the moat compatibility, a PC with a wireless keyboard is going to 100% of the time work with subtitles.
Use a custom launcher. I use Flauncher and my home page only has jellyfin on it. No ads ever.