Europeans were here 20,000 years ago, long before they were. But you probably don’t know about that.
You could debate about what kind of humaniod or other branches of human type creatures might have been on this continent 20,000 years ago.
But to describe them as "Europeans" in the same way "Europeans" have been thought of for the past 2000 years + is probably not accurate.
Any tribes of human type beings that were around 20,000 years ago would have been very far removed from our current ideas of races/cultures/nationalities. They may not have genetically been the same kind of modern humans that are predominant today.
You are trying to argue as fact and claim superior knowledge about things that are very much up for debate / research and not clearly settled in any manner.