Make a financial plan - also known as a financial pyramid. It will help guide you through any financial circumstances and will help you feel in control.
Start with the priorities -
Basics- Make a list of monthly income and expenditure on essential bills. See if there any direct debits, subscriptions you can reduce, get rid of, or switch to a cheaper supplier.
Then work out how much left over there is (if any).
From this excess, withdraw an allocated amount of physical cash each week to use on shopping for food, petrol and so on, and stick to that. Make it realistic, but frugal and not extravagent. Try this for a few months to see how it works for you. Tweak if necessary.
After that, you can start on the next level.
Build a pot of emergency cash savings that can be accessed easily (this could be your current savings). Set up a standing order from your account to deduct it from household income on the day it is paid in - then you will not be tempted to spend it on non-emergency items.
After you've built your emergency pot, if you have enough income coming in, move on to the next level.
- make plans to protect your household income. Income protection or mortgage protection (if you own a house), or build up a pot of savings to cover 3-6 months household salary. If you have dc - think about life insurance.
When these are in place you could start to think about investments and pensions.
Work through each level systematically. It will give you a clear plan of where you are heading in terms of financial security.
At the moment it sounds as if you need to focus on survival mode and the basics - income, expenditure calculations, setting a budget, building an emergency savings pot, and protecting the household income you have.
Until this is done I would forget about long term investments.
Come back to it later when the basic priorities of living are secure.