Dollar General complaint: Poor treatment of employees

I am a former store manager for dollar general. I was let go in December 2021 and honestly it was the best thing that ever happened to me. This company is so awful to it’s employees and especially its salaried managers. Across the board they have salaried managers working 60-70 hours a week in order to try and live up to their unrealistic expectations. When I was a store manager I worked 70 hours a week and still was unable to get caught up because the hours to my store were cut back so much I was running entire shifts alone and most night closing the store by myself which would leave me running register therefore being unable to get other things done. My last 6 months there I had 10 days off total. My vacation time every year was never used for me I would always have to use it because I would have to schedule my staff more hours than I was allotted so I would have to use my vacation time to cover the coverage. I could go on and on I have many horror stories about how badly the company treats it’s employees. I wish someone would investigate them go into stores unannounced I wish someone cared enough to hold the company responsible for being so horrible to their people. I have worked for a lot of companies and have never seen a company that treats its employees so poorly and be ok with it. I would love to do something I just don’t know what to do if I complain to them or will fall on deaf ears. It’s a multibillion dollar company and that is only from the blood sweat and tears of their salaried managers and not one person from the dms up to the president cares.