> Most doctor advice boil down to drink some water and take a painkiller, while glancing for 15 seconds at my medical history before they dedicate me 7 minutes, after which they move to yet another patient.
Most of the time, that's the correct approach. However, you can actually do better by avoiding painkillers, since they can have side effects. There are illnesses that are easily diagnosable and have established medications; doctors typically prescribe what pharmaceutical companies have demonstrated to them. But the rest of the "illnesses," which make up the majority, are pretty much still a mystery.
For the most part, neither you nor your doctor can do much about these. Modern medicine often feels like just a painkiller subscription.