Feel free to do a DNA test of yourself. Then compared it to ancient samples not the crackpot heriage claims of DNA kit companies that only use modern samples.. Far as I know there is academic consensus among population geneticists, modern Jews are of mixed heritage. This should be self-evident to someone by just looking at the difference in diversity of appearance Jews from different regions .This is no crime. We have all mixed to some degree. Some Palestinian fanatics, and other antisemites, twist this into claiming you aren’t “real”: Jews.
I know a little bit about how that feels. You know with several billion people currently playing stupid as the former Yugoslavians try to rob us of our identity. Really not that hard to notice their identity quick change into antihellenic founders of the Hellenistic period..