Really interesting...
Yes, when you can't earn more, cut the charges!
For your washing machine problem, you can begin by using a "filet" to protect your stockings.
Best way to do it is using... an old mesh stocking! Cut it make a knot, put your things in it, make an other not.
I'm sure there is a way something similar for towels. If not, you for sure can invent one.
Keep an eye on internet, when people have to move quickly, they often sell their nice working machine for a ridiculous price.
Buy condoms in bulk. Stockings too.
Private sales on internet for good quality lingerie, that will last for several years.
Being able to saw is always usefull. A two minute fix can save an entire outfit.
If you go outcall, try to use the bus or subway for the main part of the journey.
I bought a cheap car with low gas consumption for this purpose. A tiny one that I can park everywhere at street rate, not parking rate.
If you go high end with looks, it's worth it to learn to do all your beauty cares with professional results.
It takes time, but absolutely no money. Youtube and blogs are your best friends.
Fidelity/reward cards are the way to go for cosmetics. Often 30-40% reductions on special days.
Only having the minimum needed make up : one eyeliner, one fondation, favorites eye shadow colors and a few lipsticks.
No use in owning a sephora store that will never quit the box and take crazy space in your home.
I did it as a stripper and saved more 3k a year just by being reasonable, patient for shopping and learning to do everything by myself with perfect results.
Ten years later I'm really happy to have put effort into this! Just do the math...
Hope this will inspire you!