Dogs with difficult coat, with difficult coat - ways of care

I have a dog that is a great companion for people, children and cats. One of the few breeds that I am not allergic to. Unfortunately, the coat of this breed is famous for a huge number of problems. Most often it is wavy (although it can also be straight), dry by nature with a tendency to strong matting, with a dense undercoat. I had no idea that taking care of this hair would be so difficult. Of course, the groomer should handle it, but ... when I call the groomer, I hear: oh no, Tibetan terrier?

Well, here's this post. Maybe you have dogs with equally heavy hair to care for? Or do you have a specific Tibetan Terrier? I'm counting on ideas about dog hair care, specific cosmetics, brushes, maybe conditioners? Proper care at home will save you some money. But it will also save our dog stress, because unfortunately, visits to the groomer, many hours of combing (yes, combing this breed at the groomer sometimes takes several hours) and being in a strange place with many foreign smells is not the most pleasant for the dog.