I literally have no savings as when I try to save I have emergencies or birthdays, Christmas or kids need something
You need a change of mindset here. A lot of 'emergencies' eg car repairs, vets bills or white goods replacement, plus things like insurance, Christmas, holidays, birthdays, school uniforms, shoes, etc etc are really expected expenses that need budgeting and saving for as the expense will crop up fairly regularly so shouldn't be considered to be an 'emergency'.
But if you work for the NHS, at least you're saving into a decent pension scheme, so that's one thing less to worry about until you've got everything else covered. Don't forget you also have the state pension, so that and your NHS pension is likely to be decent and for many will mean they have as much money in retirement as they did when they were working.
Have a look at the budgeting advice on Moneysaving Expert and also the financial flow chart, which can be reviewed as a to do list to work through.
Once you've set a budget, you can move money into savings accounts on pay day and try not to spend it on things you haven't budgeted for.
https://www.moneysavingexpert.com/banking/budget-planning/
https://ukpersonal.finance/flowchart/