GTA VI has been officially described as a paid release

https://wiki-book.win/index.php/GTA_VI_for_free:_co_oznacza_oficjalna_strona_pobra%C5%84_GTA_VI%3F_14966

GTA VI has been officially described as a paid release, so any gta vi free download claim for the full game would not match the verified Rockstar sources.