Invalid game folder

[Restlxss]

I've selected the right folder even redownloaded it again now i need help lmk

[DirkRockface]

this error means you have NOT selected the correct game folder. (or if you are 100% sure you did, then you have broken game files).
Default location is Program Files (x86)/steam/steamapps/common/GAME FOLDER IS HERE

if still sure, right click on the game in steam and select properties, installed files, verify integrity of game files.

[Restlxss]

okay will try this