Do all mega carrier trainers suck?

I’m been driving trucks for a few months now and I’m glad to be solo.Swift is my first truck driving job so I can’t compare it to Werner/Schneider etc. I had 2 trainers, 1 for 3 weeks the 2nd for 1 week. My first trainer should not be training anybody. I did not learn jack from him that I could not have learned on my own. All he does is yell and criticize everything I do and has unrealistic expectations. While I did need fine tuning throughout my training and I’m still becoming fine tuned I’m not nearly as bad as he made me out to be. His way of teaching me to back is as follows. Pull forward pull forward more turn right keep going further right , turn left more left back to the right, go back left more left right too far right back left pull forward.All of this is done yelling from outside driver window. How in gods name is anyone supposed to learn that way?. I learned more from the backing diagram and instructions in the driver handbook I was given. The instructions for a 45 degree back are as follows. Start at 12 o clock pull up 1 1/2-2 spots from the space your backing into than turn right and go to 3 o clock than back to 12. Start backing into the space. Even though I didn’t nail it the first time it got me headed in the right direction and was more helpful than he ever was. After 3 weeks he went on vacation and I did a week with a 2nd trainer before getting my own truck. My 2nd trainer was great and he said it takes most of his students 6-8 months to become solid at backing.Also my 1st trainer had me back into a space where the trailers were 3-4 inches apart from each other which he took over for me . My 2nd trainer even said I should not have done that on my 1st week. Trainer 1 also told me to run stop signs. Another time I was driving around a truck stop and I stopped near the entry/exit because a truck was pulling out it blocked my view of trucks coming in. He advised me to go around the truck, just as he said that a truck pulled in. Good thing I stopped. And since going solo I am vastly better at backing than when I first started and my shifting has gotten better as well another thing I was criticized for. It’s funny how I perform much better when I don’t have someone yelling and criticizing me constantly.One last thing he said to me which was really messed up was when you hit something I hope it’s just a truck or pole and not a person.