Yup, could be coached better....but we are talking multiple OL-men and a QB running for his life. It is no coincidence that Mac has one of the the quickest releases in the NFL this year...IIRC, he was up there with Joe Burrow, Daniel Jones, Bryce Young, and etc...all of whom were struggling with protection issues. On the other end of the spectrum were Jalen Hurts, Lamar Jackson, Tua Tagovailoa, and Brock Purdy...all of whom that have 5+ win teams....
IOW, it's personnel....coaching can only help so much. And it has been better in recent weeks though....