If you're looking to find out who your biological father is, I would possibly advise downloading your raw data from Ancestry (settings > test management > download DNA data) and then uploading to GEDmatch, MyHeritage, and FTDNA. MyHeritage in particular is much more popular in Europe than Ancestry, and you may be more likely to find matches there that will be helpful. It's also worthwhile to test with 23andMe, if you haven't; they're the only service besides Ancestry that doesn't allow raw data uploads, and it helps to be in as many databases as possible to maximise your potential matches.