Go to a local pawn shop or Walmart. The Hangover DVD is so common that it is often in $1 bins. That is a permanent fix—no internet required, no domain takedowns.
Disable "Hardware Decoding" in your player settings if the video is freezing. the hangover part 1 filmyzilla fix
These sites often host "fix" files or installers that are actually Trojans or ransomware designed to steal your data. Go to a local pawn shop or Walmart
Depending on your region, The Hangover is frequently available in the library. the hangover part 1 filmyzilla fix