This is the most reliable method. If you can find a physical "Season Pass Disc" for Xbox One or PS4, the disc usually contains the license to download all episodes, even if they aren't on the store.
Even though you can't buy it on Steam or the PlayStation Store anymore, the game isn't completely lost to the "Void." Here is how dedicated fans still access all episodes: minecraft-story-mode-season-two-free-download-all-episodes
If you bought the game digitally before 2019, you can still find it in your "Ready to Install" or "Library" section on most platforms. The Legacy of Jesse’s Adventure This is the most reliable method