Stargate Atlantis (Alternate History)

Surely someone knows such a series, it was called Stargate: Atlantis. Now imagine that Atlantis is found not by the government of some country, but by a simple guy who has the so-called Ancient Gene. In alternative history, everything is possible!) P.S. If I made a mistake somewhere, wrote something incorrectly or something like that, please let me know in the comments. It's been a long time since I last watched this series, so I've forgotten a lot, and I could have messed up. P.P.S. If you have any suggestions for adding, changing or removing any content in the script, also write in the comments, I will try to take all suggestions into account.