You only missed 29,588 points to the mathematical maximum, which is mainly due to spawned 4s. But you even tweaked that and scored way higher than other players with that perfect path in the end.
Without that "version"(what is by the way default) it is impossible to reach that far because there Is a big rng modifier which you cant control other wise
@tammyfila3656 if you play for anything over 30 minutes, you can easily learn what cases are bad and undo out of then. It takes very little skill whatsoever, even if you can only undo once. The game only has actual skill if you can't undo