Good Morning.
Your RED shown Games means,these are shrunken Games / ISO´s.
Maybe they are
- simply not working as shrunken Image:
https://wiki.gbatemp.net/wiki/Nintendont_Compatibility_List
- not correctly shrunken
- bad Images
- missing something..
If your normal Games / ISO´s are working,these RED are the "Bad Guys"
Better you should try normal Games please or better Sources for Shrunken GameCube.
Thank you.