I don't know if it's my computer or not but when I try to download it says it coudn't download but when I did manage to download it the game disapears from my files and now I'm back at square one
This sounds like something specific to your computer. Do you have anti-virus software running that might be removing the game? It is an unsigned game, so by default Windows will flag it as potentially harmful - anti-virus software is likely doing the same unfortunately.
