A saved title is not a saved video
My List keeps a shortcut to a film or series page. It does not download an MP4, store a stream or make the movie available without an internet connection. For offline viewing, check whether the selected viewing service supports downloads in its app.
Prepare the exact episodes you need
Use a stable connection, check free storage and wait for each download to finish. A series entry in a downloads screen may contain only selected episodes. Confirm the individual items instead of assuming the entire season is ready.
Check audio and subtitle tracks before travelling. The app may also impose expiry periods or require a later online check. Those conditions matter when you will be away from a connection for several days.
MP4 and downloader searches
A general search for a downloader does not establish that a film is offered as a transferable file. Offline copies inside an app can remain tied to that service and account. This website does not provide a direct movie-file downloader.
Keep your travel choices in My List, then open their viewing options to check what can actually be downloaded.