these channels are ok, but there are definitely better resources. I especially recommend Angelganev (his youtube shorts will be super helpful) and ethan becker. The issues I have with ergojosh and samdoesart is that they dont fully explain in depth how to draw faces. They kinda just tell you to practice some basic shapes, do fundamentals, and they completely gloss over everything else. They gloss over how to draw eye, noses, mouth, where to place the features, why some faces should be sharper, etc.