Teachers, how do YOU handle 30 students by yourself?

Obviously, there's a certain student:teacher ratio that's supposed to come into play here, but not all places get it right. I wanted to be a teacher SO bad for a while. I took a job as an after-school daycare teacher around Halloween 2017. I only lasted a month. The kids were between 5-11 years old. I was hired as the "Assistant Teacher", but the "Lead Teacher" spent most of her time in a different classroom so I had to take on roughly 30 kids a day, by myself, having had no training prior to this. Up until that point, the most kids I supervised was 2. The whole experience ruined any desire I had to be a teacher and I've never gotten over that. How do you typically handle that many students by yourself? Even just as a daycare teacher. Laurie, I respectfully disagree. I really wanted to be a teacher. When they called me and told me I got the job, despite having no credentials or formal training, I was in tears from being so ecstatic. It was a Christian-based program, but these kids didn't care to know about God. I had my fair share of GOOD kids, but the bad kids influenced them to not listen. The majority of them would not listen, no matter what I said or did. Sadly, 3 of the worst students were the children of the daycare directors. One time, the daughter of one of the daycare directors sat there and poured milk all over the floor because she was upset at another student. I also had to be in charge of 4 out of 5 NIGHTMARE siblings. 2 of them got into an actual fist fight, on my watch and I had to break that up so I wasn't able to worry about what any other student was doing. It was awful. They even made me cry once or twice and eventually, I left at the end of my shift and never came back. Most of these kids had divorced parents or parents who were never married, parents who were on drugs or in and out of jail, kids who weren't allowed to see one of their parents, etc. All of these kids needed more help and attention than I could give them...not to mention, I realized months later that they only wanted their real teacher back. They were so happy once they got her back. The kids never wanted to give me a chance. 2 of those siblings lied to a director and said I cursed in front of them, which was a lie. She came to me and asked me if I cursed in front of them and I said I don't even curse outside of work, let alone at work.