Hey op and everyone else here.
I too have had a shitty day after a shitty 15 months of Covid hitting family finances,dh having to work nights permanently again thanks to covid.
I've just sat and filled out an application form for a job as a waitress/kitchen helper/meeter and greeter etc on the only two days I don't work in my full time job.
Yup covid has really fucked our finances 
With each month we seem to be robbing one pot to pay another and have had so many extras like big car bills,shoes and clothes for the dc that are now in adult sizes.
I'm so sick of scraping around every month.
Paid from my full
Time employment less than a week ago and I currently have £25 to my name to last me until the end of august when the school uniform and school shoe bill will come in. 
My mental health is taking a battering aswel op.
I've been walking a minimum of two miles a day when I'm not at work etc and it's improved my mindset a lot but tonight it's hit me like a brick wall that my full time employment that I've been with for 25 fucking years doesn't actually pay enough or anywhere near what I deserve while the two bosses are looking at buying another property elsewhere for holidaying in
I'm angry and frustrated and mentally tired after years of working my ass off to get where I am,which I've recently realised is not where I wanted to be
My eldest child earns way more than me ffs yet I've spent 25 years focusing on a career that's got me nowhere.
And now I've got to take an extra job just to stay afloat.
Sorry I'm ranting but reading your post struck me because today is the day it's hit me.