In my humble opinion it is the groomers job to not only groom a dog but to also have the skills to calm them in order to get good results. I too had a very bad experience with a groomer. I took Chloes sister Georgie in some years ago to a groomer that was supposed to be good. When I went to pick her up she had clipper marks all over her body where she was shaved down to the skin. The groomer also didn't clip Georgies nails which was the one thing that I really needed her to do as her nails are black and difficult to trim. The groomer actually said that it was the dogs fault! I left without paying her in spite of her protests. Poor Georgie shook for a few hours afterwards. I have no idea what the woman did to my poor girl but I can say I was pretty upset. Sorry to hear that you had such a bad experience
Perhaps you can ask if anyone here on YT knows of a good groomer in your area.