I'm losing my job and I feel lost.

My late 40s daughter was made redundant from a job she’d had for 20+ yrs she was very worried about where she went from there. It took 8mths and one false start but she’s now very happy she looked at jobs that were completely different from her previous job as she’s now doing something different and so far it’s going really well.
So do consider jobs that might be out of your comfort zone and list all the skills you have, good luck.

In your 40s you are still young and lucky you have many more working years ahead! I would sit down and think about the skills that you have - many of which are transferable to other positions. What do you enjoy about your current job? What are you good at? People? Figures? What do you dislike? Ideally what form would you new job take? Large organisation? Small? Working from home? Giving this some thought and writing it down may well give you and idea of where you need to start and how you need to approach your job search. Many jobs are not advertised so don't be afraid to let people know when you are in the market. This is an exciting opportunity - make the most of it! Good luck and best wishes.

"old and expensive" - I know what you mean HT.
I found the same result many years ago when I tried to move to another area in my 50s.
You're so young though. Is there something else you've often thought you'd like to do, but needs training? Think about it, and if so, go for it. You'll enjoy the challenge.