A very often asked question, which is very difficult to answer....

With Veterinarians, it is like with all people, each has their strengths and weaknesses, everyone makes mistakes and one prefers him and another her etc....
Is clear, but it doesn't help you any further!

Those who have not studied veterinary medicine, will find it difficult to assess the work of his veterinarian. But often one can read something out of those small routine chores...
Let us therefore take a look at the vaccination!

Of course, the vet should be calm and deal kindly with your dog. But above all, before each vaccination he should check the animal for any obvious health concerns. The vet should look at the nose and eyes and take a look in the mouth and ears. He should listen to the animal (heart, lung etc.). He should also check the lymph nodes and have a look at the sex organs in order to get a picture of the general condition of the dog before he vaccinates! - Only a healthy dog is to be vaccinated!
If he does not do this , or does not do so thoroughly,
I can only advise to see another Vet instead.