Launching Issues

When I log into Minecraft, the launcher downloads the version, 1.12.2, perfectly fine. It gets to the white screen that says Mojang before the game is fully launched (before the title screen). I have waited two hours for the game to load fully and it never does. When I click on the white screen it always crashes. I have tried uninstalling and reinstalling the whole app, different versions, waiting for it to work, and trying everyday every few hours to see if it possibly would work. I have already restarted my computer.