Plex with Apple TVs. This requires a lot of transcoding but I have dedicated hardware.
I’ve tried many alternatives over many years but they all eventually annoy me. I’ve been doing this long enough to know eventually something better than Plex will come along but that day has yet to come.
I don’t have any streaming services. They are all terrible and I prefer to put that money towards more hardware, mostly hard drives since my library is of the data hoarding style, ever increasing.
My setup is entirely automated via various watch lists.
IMDb watch lists and Plex watchlists as well as various lists setup to retrieve based on cast / director involvement that feed into Radarr and Sonarr allow titles to be added from my phone.
The added benefit of a my automation setup is that I can lose a hard drive and the system will self heal.