You are still at home, head of the house (per WT rules). Use it to your advantage.
Teach your children science and logic. Plan trips to natural history museums. Los Angeles has one full of dinosaurs. LaBrea Tar Pits too. There is one in Alberta, Canada also. (Don't know where you live).
Get them interested in astronomy. How many light years planets are away from earth. Tell them the people who have computed the answers have studied for years in their field.
Earth sciences, the study of tree rings, geology and studying rocks and learning how they were made and the forces behind that from events that happened thousands of years ago. Mexico and New Mexico have wonderous caves full of exotic formations and crystals. Can you look at available videos of volcanoes and caves and anything of special interest to them and you watch them all together?
Physics is fun. Help them learn.
You can teach them science and math while cooking and baking (and eating the results) while all together in the kitchen.
Make your precious time with your children something enjoyable, that they will treasure in their future when they think of you.
Win your family through love and kindness.
Be gentle with them. You picked their mother. You both picked the same religion. They picked neither. They are stuck in the middle.
Hugs. We all know this is hard for you. Please keep posting and venting.