I try to download the file, I've tried both the windows .rar and the other .jar option, and it just keeps giving an error saying the .jar cannot be decompressed. I know that on download it says that it will need 5gb of space but I dont know how to fix that. How do i solve this?

I don't know why the itch.io launcher is broken (it seems to randomly have problems with a variety of games), but you can manually download the Win64 version of the game through a web browser and then extract the contents with 7zip or something. To launch it through the launcher, try installing the game again in the launcher but choose "Changelog.txt" on the confirmation page instead of "Tales of Androgyny Win64," then once it installs, right click on the Tales of Androgyny icon on the bottom left of the launcher and choose "Open folder in explorer." Finally, paste the contents (TalesOfAndrogyny.exe, etc.) of the folder you manually extracted into there. Now it should launch through the launcher.