I haven’t completed these courses so I can only vouch for them so much, but the Ben Tristem courses on Udemy are pretty good in my experience. there are courses for Unity with C#, Unreal Engine with C++, and 3d modelling in blender. I got pretty far in the 3d modelling course and it was absolutely great.
Just don’t pay more than $10 on a course on udemy, theres always some coupon or deal going on.
There’s also a site that has been sponsoring a lot of youtubers lately called skillshare, its similar to udemy but subscription based. I haven’t tried any of their courses out yet, but they look pretty good, and by clicking the link from a sponsored youtuber you can get a 2 month free trial.
the teacher in action:
his free udemy course: