Oil filter is at the front, lower, left side of the engine looking from the front of the car. You'll need to remove the black plastic undertray to get at it.
how the hell do you adjust the clutch on a 19 JTD
What's wrong with it? Have you just replaced the clutch and can't get the bite point in a useable place? If so you may need to manually intervene with the hydraulics and put the bite point somewhere useful, after that it should self adjust. But is it too low or too high?