What makes a catalogue useful
Three things: does it have the title, does it know the seasons and episodes accurately, and does it tell you where the title plays where you live. MyFlixer is built on all three, with a search that understands nicknames and original titles, a dated season page for every series, episode marks that remember your place, and a Watch now button tied to your country.
The names people compare
FMovies, 123Movies, SFlix, Soap2Day, GoMovies and YesMovies are the names most often typed in the same breath, on Reddit threads and elsewhere, as MyFlixer alternatives. Most have moved addresses many times and several have gone. Whichever you try, the test is the same: does it find the title you want by the name you know, and does it remember which episode you are on.
Free services
Tubi, Pluto TV, Crackle, Plex and the free tiers of some subscription services carry real catalogues at no charge with advertising. When one of them carries a title in your country, MyFlixer's Watch now lists it, marked as free with ads, next to the subscription and rental options.