I can see that OP's post is true.
I have a good degree, qualifications post degree and work in FE education. I love it but the pay is shite. No increase in salary for years. I earn £21,892 a year working 4 days a week, that is including an extra chunk for extra responsibilities. DH has a decent job that pays a little more.
Bills go up, DC growing up and costing more but we have no more money, in fact less as we are paying more out.
We live in private rented, have been saving for a house deposit for years. We'll get there but we are not getting any younger. We have no debt but we do not go on holidays or meals out or anything like that.
We manage, I consider us very lucky, we live in a nice area, good schools, countryside nearby etc. However I can see that getting into debt can be very easily done. If one of us lost our job, if the rent goes up is year, we will struggle.