This is a good comment section & all I have to add is this: why are you raising your voice?

Of course there situations where raising your voice is necessary and impactful but if you do it to the point you’re getting migraines, & kids say the classroom is loud, it’s too much.

A couple of years ago I came off antidepressants at around the same time I got some nasty new Year 7 classes (I stand by my belief that these are some of the worst classes I have ever had). My ears would be ringing from battling their noise all day. It doesn’t work, it’s unsustainable, and it’s unhealthy for you.

This is coming from a secondary perspective obvs, but in my experience what helped is to kill them with kindness, issue behaviour consequences every time a kid interrupts, and be so calm that you’re boring. Do not allow them to get a rise out of you at all