i'm sorry i don't have any advice to help you but i want you to know that your children will think of you as a good mom as long as you want to be a good mom to them like now.
My mother is working full time. She doesn't do any housework or cooking (we have ppl do it), but i can always feel her love through every moments she talks with me, how everyday she ask me "how is your school today? any fun?" - and even if i come home late (usually 10-11PM), my mother still come to see me and ask "how is your day", and if i wake up every morning before she goes to work, she will still always ask me "what do you want to eat? i'll make it for you". And everytime we do anything together, we always discuss things like adults and adults (not like kids vs mother). I can feel she respects me and love me as much.
So you don't have to stay at home with your kids all the time to be able to show them that you love them and you're a good mother. Just try to spend times talking to them everyday, ask them how were their days and what are their plans tomorrow
they'll know that you love them and care for them.