I'm sorry to hear you're struggling OP. Everything is so expensive right now.
Please do get some advice about the debt.
First things first, you really need to know where your money is going. We use an app called Moneyhub to do this but there's a fee after the first 6 months. You could also look at Emma or Snoop which are free options. Anyway I have budgets set on the app and it automatically pulls in all our transactions from our various accounts - it categorises them for you and you can adjust the categories. It gives you nudges when you've spent more than expected in a budget category by that point in the month. I check in quickly with it every morning. Crucially I know we're at risk of going over budget before it happens.
When you know where it's going you can start to make some choices about where to focus your spending and where to cut back.
I would go through everything line by line and be ruthless. It doesn't have to be forever but while you're tackling your debt, you need to find ways to reduce your spending.
Have you got the best deals for insurance and utilities? Shop around to check.
How much is it costing you to run your car(s)? Can you reduce this?
How much are you paying for your phones? Can you reduce this?
Can you manage without subscriptions for a while?
What's costing the money in your food shop? Snacks are expensive, ditto some fruit and veg. Can you swap out some things for cheaper options? Eating less meat is an obvious way to save money.
Before you buy anything, think to yourself:
Do I really need this?
Could I borrow it?
Could I find it secondhand? (Or even free? People on local FB groups give away all sorts)
Can you set yourself challenges like no spend weeks? Where you only buy essentials like food.
Money Saving Expert is great for tips.
Sinking funds for planned occasional expenses are a good idea: Christmas, birthdays, car service/insurance/MOT, home insurance are obvious ones to start with. Plan those into your budget.
And then start thinking about an emergency fund - £1k is your initial target. So next time you need a new oven, you don't have to go into debt to finance it.
Change your mindset: look everywhere for a few pounds' worth of saving to keep chipping away at that debt.
Dave Ramsay's baby steps might help you.
It's worth a google and there's a UK Facebook group.
I do think that ultimately the best way out of this is to increase your income. I know lots of people who don't need to use wrap around childcare much any more because they work from home much of the time. They pop out and pick the kids up from school then go back to work - and I think yours are old enough to amuse themselves for an hour or two until you've finished work. Holidays are a juggle but again don't necessarily involve holiday clubs every day. So please don't feel like a school based job is your only option.