...but then I realized, everytime it gets an error, then I download again, it continues, which is good.
Not until I realize it's already downloading multiple installer since the whole week I tried to download it (blame s*** internet), it takes up too much storage, and I don't know where to find these installers to delete them, anyways I just want to say that the auto-updater should just continue downloading that one installer instead of downloading another one, if it's possible.

Oh and might as well ask, where can I find those installers so I can delet them?

If you are having problems with auto-updater, just download the latest version from the official site.