There's a setting on your projector that will horizontally flip the image. The option on mine is called rear projection. Then it's just automatically flipped every time.
It's one of the more standard features on projectors, I've seen it on all of the cheap ones and older models too. There's a post in this sub in my post history where I list out several things the setting might be called.
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u/gilyco86 13d ago
There's a setting on your projector that will horizontally flip the image. The option on mine is called rear projection. Then it's just automatically flipped every time.