I know this will probably come across as judgy. I'm sorry for that but at the same time I think it's relevant info.
It sounds like a parenting issue in that you don't yet have the strategies necessary to get things done without shouting. For example, telling a child "don't do that" is much less useful than saying "do this" e.g. say "keep your food on your plate" instead of "don't throw food". This is down to how children process instructions.
It's pretty normal for loving parents to find themselves in a cycle where only shouting works. It's really not ideal though, either for your kids or for you. There are ways to break the cycle, but it takes time/energy/money/finding the right advice etc.
If you're interested in parenting books, I would really recommend "Hunt, Gather, Parent" by Michaeleen Doucleef.
If you don't fancy reading but have some spare cash there are "parenting coaches" that can help you figure out specific strategies that work for you. For a good description of what a parenting coach is, look here: https://ukparentcoach.com/what-is-a-parent-coach/
Some googling would hopefully find you someone you like the look of, either online or in person.
Anyway, obviously feel free to ignore all this if you don't find it helpful.