1- follow this https://content.byui.edu/file/2315e65e-a34a-48d3-814d-4175a2b74ed5/1/intro/165-opengl-visualStudio.html
article on how to install nupengl.core
2- go to playground project
==> properties
==> Linker
==> General
==>Additional Library Directories
==> add new source and paste $(SolutionDir)\Dependencies\freeglut\lib