I'm sorry you're finding everything so hard.
Not in a patronising way, but I want to say that you are really fortunate to be able to buy another property.
I have just concluded my divorce (Ireland, for info) after an epic 10 year battle to get here.
I was able to borrow money from my mother to buy out my useless ex, who put us through an utter nightmare financially, has contributed very little for a decade to his DC, and in the settlement will pay more maintenance, yes, and on paper share 50% of medical & educational costs but it will be a battle to get anything out of him.
He walks away with a generous lump sum; he doesn't see the DC so all practical & financial responsibility for them rests with me.
I can't take out a mortgage in my own name, so this lump sum indemnifies him from any interest in the house - so it's effectively 'mine' but needs a lot of work done & is far from being my ideal choice.
The important thing was I had security for me & DC, and I feel I paid a high price for it.
Being able to start again, in a house of your own, albeit smaller, is a huge advantage and worth a lot. Not many can do this. (for reference, I've a good salary & role, but no option for a mortgage due to having 3 DC, and maintenance is not allowed to be included as income so I was ineligible for a mortgage).