itch.io

ok first download this its the unnoficial wineskin cause the official one is broken
https://github.com/Gcenx/WineskinServ...
(note unarchiver might not be able to unzip this so download "Keka" to unzip it properly)
step 2: once you open wineskin click the "+" and get the "ws11WineCX64Bit20.0.2" engine
step 3: once its done downloading click create a new blank wrapper then wait
step 4: once its done creating it click "view wrapper in finder" then drag the wineskin wrap somewhere easy to find
step 5: right click the wineskin wrap and press show package contents then click wineskin
step 6: Advanced>install software>move a folder inside>shaggy mod folder
(once you do click on the folder make sure to double check the prompt that its checking the correct exe file) 
step 7:run the game (make sure to open activity monitor fnf mods tend to be bad at ram management and causes leaks so pc may heat up)

source:

I can help you run it on a mac

give us the ability to change ghraphics in options
as theres a side in the tree where I cant see what im doing due to lighting