i download the game from here because official web page has virus but where is pkhex

[hitaksh-5341]

[Lusamine]

Use a search engine to learn how to allow files that are falsely flagged by Windows as a virus. It was probably removed as a result of the false flag.

[hitaksh-5341]

which search engine

[Lusamine]

https://www.google.com/
https://www.bing.com/
Take your pick, or find another you prefer. This isn't a PKHeX issue so much as learning how to use your PC.