Unfortunately, once you are out of being a student or perhaps starting out your professional career, having a coach or mentor is frawn upon or at least not common https://www.newyorker.com/magazine/2011/10/03/personal-best
The author - a surgeon - describes his experience asking and getting a retired surgeon to coach him for self-improvement purposes. It works out really well although he does mention some minor uncomfortableness like having to talk through one almost-fsckup. Although the author lists this as a slight negative it is actually an endorsement of coaching: self-improvement.