Too Dark to do anything in the tutorial even with gama max and brightns max and HDR on or off even windowed not a big help stil too dark if o need to start over from scratch do I need to uninstall athen reinstall? looks nothing like images in Apple App store. Is this mac too old to run this game?

iMac (Retina 5K, 27-inch, Late 2014)
Model Name: iMac
Model Identifier: iMac15,1
Processor Name: Quad-Core Intel Core i7
Processor Speed: 4 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Hyper-Threading Technology: Enabled
Memory: 16 GB
System Software Overview:

System Version: macOS 10.15.7 (19H2)
Kernel Version: Darwin 19.6.0
Boot Volume: Macintosh HD
Boot Mode: Normal