Hi OP, sorry your thread has been derailed. I think sometimes, some people can't help the chance to rant at the government and those who voted for them, which is obviously a big part of the problem, but not helpful to you.
I think something that makes the current cost of living crisis worse for people your age is that it's the first time you've experienced significant inflation and the last recession was 15 years ago so you were very young so unless one of your parents lost their job and there was significant fall out from this, you probably can't remember times like this before.
If you actually do want budgeting advice, you probably want to repost in Money Matters or have a look at Moneysaving Expert which is a great resource to help to work out where your money is going and see if you can cut any costs. If you can do this, you can sometimes free up a bit of money to make things more comfortable.
Definitely also do a benefit check because, even if you're only entitled to a small amount of universal credit, and every little helps, you'll also get extra help with energy costs, be entitled to a social broadband tariff and also the Help to Save account, if you can manage to put a little money by for Christmas, car MOT and repairs etc, you get a bonus equal to half the maximum balance after 2 years, so free money from the government and a big incentive to try and save a bit if you can.
From the post I'm replying to, what stands out to me is that you're spending a lot of money on petrol, and also you appear to be paying for your energy by a method other than equal monthly direct debit.
On petrol, do you live a long way from work and can you find a job closer to home? Where does your DH work compared to where you live? Could you move? I know moving costs money, but if you could manage it, it might be worth the investment and upheaval if you found somewhere where petrol costs would be lower and is cheaper to heat even if it means borrowing the deposit from a parent or looking for help with a deposit scheme.
Can you pay your utilities by standard direct debit so you can spread the cost all year?
On a slightly brighter note, if you pay your council tax over 10 months, you don't pay in February and March (this sometimes applies to water too) so that's a bit of money spare that you could save, or use some of to treat yourselves.
On treats, with DC your age, a family National Trust membership could be a good investment if you have suitable properties nearby as it allows you free days out for about £10 a month (take a picnic because cafes are £££s and really busy at weekends).
Takeaway pizza isn't really a treat to me because it's usually very expensive for something that isn't significantly better than a nice one from a supermarket, but you could have a look at the Too Good to Go app to see if there's anything on there that you can get cheaply for a treat.
Good luck 