Run entitledto.
If you're on a mortgage, that'll make it harder but also, you're better off than renting long term
Believe me when I say this, there's people living much less.
Get you're account up online and detail every outgoing. .split them into absolutely essential, necessary but, luxury.
Essentials (speaks for itself, make sure best deals and lowest usage possible);
Rent / mortgage
Electric
Gas
Water
Council tax.
Food. (Meal plan, meal plan, meal plan... And slow cooker budget meals)
Necessary But (are necessities but could be cut down or found cheaper etc);
Phones (dump contracts, go £8 a month GiffGaff)
TV (dump license and sky and streamers you're not using, go Netflix, prime, Disney+ on a rolling month by month basis .. have Netflix September, prime October, Disney+ November, Netflix again December so on and so on)
Internet (dump the big expensive speeds you don't need, go for a fast enough speed after doing some research on what you actually need. The amount of people I've helped that had a £50+ internet mega fast h limited this that and the other etc package and when they've looked at it they could save £30 and get a £20 fast enough package like BTs essentials)
Car (lots to be saved in cars. Some people have such huge cars for £300 a month for running to Tesco and commuting 20 minutes. Realistically look at the size of cars you really really need. If it's empty, beside driver obviously, for 90% of journeys ..why haven't you got a fiat 500 instead of a Range Rover 4x4 Tractor that you can't park in a small space anyway. Also insurance, save money there.
Luxury:
Holidays
Clothes
Takeaways
Costas
Etc etc
Brutal honesty is necessary when looking at luxuries.
"Oh but I NEED my Costa to function"
I've heard that before.. till you use a pink highlighter on the outgoings and just highlight coffee bought out and it totals £50 in one month...
So on and so on.