Ovenbun, you say if I really can't do any of these things...almost as though I am not doing enough to improve my own situation, which tbh is unfair.
Fwiw:
I have worked in my field for 17 years. My current role is the most family-friendly I have had, and with far shorter hours than I've been used to. I can't afford to work part time, because I have a mortgage and bills to pay from my salary alone. I earn a good wage, not a fortune but enough to live decently if not anywhere near lavishly.
I work approx 6 miles from home. Traffic is so bad at this time of year the journey takes over an hour a day, each way, sometimes up to 1.5 hours. Again, its much closer to home than I have worked previously, where my commute was always 1.5 hours each way or more. There is no possibility of a job in my field any closer to home. I can't work from home due to security/DPA issues, no-one in my office does.
The town where I work is hugely expensive. If (leaving aside the issues over ownership of my house) I could sell my house, I would at best be able to buy a 2 bed property in that town, possibly not even a house. My sons are used to their own bedrooms, a large house and garden. They would be miserable in a much smaller home. I would be no better off financially, indeed my mortgage would be bigger than it is now.
The other issue about moving to the town where I work is there's every chance I won't be working here in another year or 2 anyway, because that is the pattern my career has taken.
I already live in the cheapest part of my current town. The only way to reduce my mortgage/outgoings would be to move to a worse area, and a much smaller home, which again I know my DCs would hate.
I am sure my children would, if they had the choice, like me at home more; but unless my employers are prepared to pay me the same wage for less hours, or I have a win on the lottery, it simply isn't possible. That's the way it is. I wish I did have a partner who was around for them when I wasn't able to be, or who could relieve some of the financial burden, but I have been single for 6 years almost so it's unlikely. I just have to manage work the best I can, which is what I am doing.