Let’s take a trip to the medical world:
In case of illness, you first go to the doctor and not initially to the specialist.
For example: you have a huge headache for a long time. Then, because of the pain in your head, you do not immediately go to the neurosurgeon to undergo a major brain surgery.
You first go to the doctor, the generalist. He/she will check what your complaints are and tries to find the cause (s) as best as possible and then draw up a treatment plan with you. In this he/she refers, if necessary, to the relevant specialties.