Well you are brushing with a broad brush. Hard to say all trainers and then boil your perspective down to big box gyms.I've always found personal trainers to be the absolute biggest waist of money unless you are an elite level athlete. What can a trainer at a LA or Anytime tell you that google cant?
Also the client ultimately dictates how good the trainer can be. Let them keep running you through the same bullshyt, donβt supplement with additional training..........you fukked up.