Hey, as a single mum 100% of the time i understand that as much as you love your kids, you (all) need some time out from eachother. Can you suggest to their father that you all meet at the park or somewhere away from the house. You can then leave them to play/do activities and you have an hour or few to yourself?
Also, depending on the age of your children, can they be enrolled into classes or sports activities if their choice? And then you can ask their father to help with the dropping and picking up?
Just suggestions… stay strong. X