Welcome @Spiritualpanda 
You are not alone in recovering from marijuana and you are also not alone in being a parent of young children (search “parenting”, “motherhood”, and related terms in the search field and you will find many threads). It is possible to get clean and to be the person you want to be.
There’s lots of wisdom here on Talking Sober. Here’s a thread I like:
Your #1 tip for sobriety (over 2 years sober)
If you’re looking for some podcasts, learning, and groups to join (there are virtual and in person), check this out:
You are not alone. It is a journey to find sobriety but at the end of the day what really matters is today, this day, this hour, this moment: learning to be aware of yourself and reaching out for help when you need it. You’ve already taken that first step here. (I still reach out for help to my sober contacts, multiple times a day, and they do to me as well.)
Welcome to Talking Sober!