We are in the same boat as you op. Thankfully the wise mumsneters are great with life tips.
I switched from Tesco to Aldi and we are saving but I don't find the food stays fresh for as long so that's under review. Plus Aldi is a fair drive for us where Tesco delivers.
I started on payday putting our savings/holiday money etc away into pots in Hyperjar. I have a fair bit put away already in only a few months.
We completely stopped top up shops and get everything in the one main shop. Saves time, desil and extra money.
We pushed our weekly shop back by a few days and just use up the leftovers. This decreases the amount of shops done.
We got an outside tap fitted so we can now clean our cars ourselves.
We have put a car up for sale, downsizing to one car.
We have started composting for environmental reasons and to save money.
We are also growing our own veg.
We have completely switched off our heating until winter.
Drying clothes outside
Cut out all subscriptions like magazines, tv channels that we hardly use.
Phoned all my direct debts and cancelled the ones we don't need and reduced the others.
Cleaning products cut to 3 items
Sold stuff on ebay/vinted
I sat and went through our outgoings and income on our bank statements and then seen what was unnecessary. Then wrote budgets.
Stopped shopping for the sake of it and pushed hair appointments further apart.
Bought pamper stuff to do it myself at home rather than a salon.
Hope this helps op, basically I have tried to reduce everything I can and have changed my thinking to it's my money to keep rather than give it to a company.
I still have changes I want to make.