Take a photo of your whole lock body. Chances are it’s reversible.
And I just saw your post on r/woodworking. 😳
When people tell us we’re too expensive, this is the kind of shit I point them towards. 5 hours later you have cheap shit hinges, a cheap shit lock (at a second attempt) and enormous gaps around the door after you attacked it with a plane for no reason. Alternatively, you could have had a locksmith open it for you with no/minimal damage for about £75-100.