Hi Sasha, I'm sorry you feel low. I've got two kids and for a few months I was really low with the "is this all there is?" For me it has improved. I put it down as growing pains in sobriety. Finding my way.
I seem to remember your daughter is quite young. Is she in school? My daughter's teacher is always looking for parents to read to the students or volunteer in the classroom. Or programs for parents and children.
Hugs. It's hard. Perhaps see your doctor but it will pass.