I’ve been messing with genealogy for years. Four years ago I did a 23andMe DNA test which showed 99.9 Western European. That matches what I know of the family. Then I downloaded the DNA file from 23andMe and started running it through other tools with varied results. Try it. there are lots of tools out there and none of them know everything. One shows me with 3.8% Neanderthal, which my wife says explains a lot.
Anyone with a heritage from the Alpine regions will likely have a surprising amount of Neandethal. Apparently, in the isolated valleys and mountaintops Neandethal settlements existed for a long time in parallel with Our guys.
There is a small town on Italian-Austrian border where the locals are all 20-30% neandethal.