If you are looking to watch or download the movie legally with English subtitles, several official streaming platforms offer access depending on your region:

Also provides a digital download option for purchase. Plot Summary

Through a mysterious ham radio, the two begin communicating in real-time. Unaware of the decades separating them at first, they share their personal struggles, first loves, and dreams. As their nightly conversations deepen, they discover how their timelines are unexpectedly intertwined, leading to a poignant exploration of fate and connection. Ditto (2022) - Plot - IMDb

The film can be rented or purchased in HD.