Hi Lola. Sorry about the grumpies. It will pass. Your brain is trying to find the magic mixture of all those things like dopamine and serotonin, etc, that alcohol disrupts. It does take time, but it will get better.
For me I have to be very deliberate about practising gratitude. It may be helpful to keep a gratitude journal or list. Also, exercise is the only thing that can help me when I absolutely can not get out of that funk.
You are doing great. Keep going.