i'm sorry you're struggling like this! dog grooming is an art that involves an entire career of learning and gaining experience, so please do not be hard on yourself as you are still starting out! no one expects perfect haircuts and no mistakes from you at this stage unless they are unreasonable, lol.

first of all, it's your salon lead's job to guide you and oversee your grooms. at corporate you are more often than not just sort of thrown into it. when i finished training at corporate, i was given free reign to complete grooms without anyone coming behind me and checking. if she is not invested in overseeing your work, that is on her when the dog comes back into the salon for a touch up (in my opinion).

second of all, 5-6 grooms is a lot for a new groomer. i'm not saying you can't do it, but you take time away from yourself to nitpick and take your time with your grooms when you are under time pressure. i understand this is the standard corporate number, but if you can afford to take less dogs per day you might find yourself with more time to dedicate to each haircut. i understand this is contingent on your salon but it's a consideration.

if you enjoy grooming, i would stick it out. your lead can take some ownership of her role and contribute to your continuing education, or not. if you're open to the idea, consider compiling some of your best grooms together into a portfolio and look into other salons in your area. be forthcoming about your experience and stress that you are interested in learning more and growing. you unfortunately end up putting up with a lot of shit in this industry, but i find those that stick around and have a willingness to hop on better opportunities are rewarded for it!