I would also recommend to TooGoodToGo app. I find it useful to have all my bills on a standing order/direct debit. So I know my outgoing each month. Lots of free budgeting apps online. If you have a freezer buy marked down food and freeze, I do this a lot with bread. Lots of budgeting Facebook groups. I used to scan my receipts for a company and had love to shop vouchers to use from the points I collected.
We arent on good wages, but after rent, bills and usual outgoings like food, we are left with £200ish. That goes towards our debt (we're on a DMP).