Hi Sypder!
When you build the project, there should be a "Release" or "Debug" folder inside the project folder (depending if you built it debug or release).
The .exe file inside this folder should be all your need to distribute your game!
Did the error occur when you tried opening this specific file? If so, what error appeared?
That totally depends on the libraries you use to develop your game.
For example, if you use SDL2, you need to ship SDL2.dll with your game for the players.
If you release the game to Steam, you need steam_api64.dll.
And the list goes on...
For this small game, I used no dynamic libraries at all (no dlls), so I could just distribute the .exe!
But for bigger games, it is inevitable. If you open some of your favorite games' directories, you will most certainly see tons of dll's there.
So the best you can do is to create a .zip file with all the dependencies (which will probably also include assets such as .pngs, .wavs, etc) and distribute the .zip for players.
In itch, you can use the 'butler' build tool to send the folder directly, just like with Steam's Content Builder tool, but the idea is the same: pack all the necessary files in a .zip for players.
:)
