you are suffering from anxiety.
i thikn you really need to take a step back, let the meds kick in and give everything time, nothing is going to change overnight
you really think you are the only mother whose children bicker and squabble all the time?
you are depressed and it is stopping you from thinking clearly and seeing the situation for what it is.
this too will pass
your children will not be this age for ever and you will not feel like this for ever
bake a cake with them, or do soemthing nice, just try to take a moment