I have worked as a long term supply teacher in various primary schools. The vast majority of these schools are "brainwashed" institutions, with increasingly younger inexperienced Heads, who believe that we shouldn't tell children off, we shouldn't shout, and that we are better off being "understanding, calm, sensitive to needs, restorative" and the rest of it.
In these schools, biscuits are given to naughty children because they are "anxious". Children stormed out of class, swore, were disrespectful, had fights, had arguments, and were completely feral, of course all in varying degrees from really bad to just low level behaviours. This has been the case pre and post covid in my experience.
However, I have been working in a "rare" school for a year, with an "Old School" Headteacher who is in his sixties. His deputy is also in her sixties. Children face the wall if they misbehave, they are shouted at when deserved, teachers are empowered to be really strict. I'm allowed to shout, I'm allowed to demand silence, I'm empowered and encouraged to insist that children face the front and listen attentively with arms folded. Work must be their best or they stay in every break time and lunch until it is completely re-done to their best of their ability.
The Head and Deputy enter classrooms and will fiercely support, demanding the children follow the rules and are respectful. Any child who doesn't, is immediately outside the classroom getting roundly told off. I'm allowed to tell parents that we expect good behaviour in this school. The SLT tell parents we expect the best here, like it or lump it. Fidget toys are banned, phones are banned from the school site, no ELSA units, no nursery clubs, just one ELSA who is also very strict and doesn't do "namby pamby". Needless to say, the school has just received the best SATS results in the city, and an outstanding OFSTED report. I don't want to leave this wonderful school. I don't know any others like it and it will be a sad day when the two great leaders at top retire.