Don’t get to worried yet It’s just that being right at the bottom anything can end up there.
If the oil is coming from the filter seal and the filter is not loose,
Try draining the oil out, clean and check the filter seal and the seat were it seals to the engine
If all looks ok then re fit the filter you have with just a light film of oil on the seal.
Could just be some c**p on the seal from when it was fitted or a dodgy filter seal
hope this helps
