I've only been cable free since 2016. But when I did, I had to ween my wife slowly. I first went to PS Vue for about 6 months, then I switched to an off the grid Service. Now, it requires a little more maintenance on my end to keep everything updated and running smoothly. The Terrarium clones make it easier.
I have Real-Debrid, which gives very good links to movies/tv shows. I also have a Trakt account that keeps track of all my favorites, so all the shows I watch are always there no matter which app I use to watch them on. You link both of those to your app and it makes life easier.