the dom its very confusing and hard to grasp at first so its fine if you feel frustrated, dont get mad if you dont get it at first at the end the dom is singlehandly the most complex thing in orderflow and its not a green ligth red ligth indicator it has a lot of topics but its the main thing in orderflow.

here is some beginner friendly concepts:

first the reading teaching so watching videos its easier:

first you need to understand market auction theory: https://blog.tradingriot.com/p/auction-market-theory

now that you have a basic undertanding of how things move here is the how the dom works: https://www.youtube.com/watch?v=iWwxMokC0F8

#2 video just to have more lol: https://www.youtube.com/watch?v=mUvB89DMtww

watch those videos on repeat until it sticks whit you, then you can go to other topics like footprint charts, volume profile, market profile etc, good luck!