I'm so bad at budgeting, but as a former 40 a day smoker (now down considerably), with a regular eighth of weed on the side (cut out completely), pretty much anything costs less if you compare those, and you think ok, roughly £10 for a 20 pack, x7 - £70 a week is two hours of electrolysis.
I have savings as well, but I'd rather not race them into the ground, and I have a limit that I cannot go below - which is the cost of surrogacy - so if it went anywhere near that, I'd have to stop, because being able to afford that is at least as high a priority for me. I own my home outright, and there are only two things I'd sell or remortgage it for - surrogacy, or to pay off my uncle for his claim on my grandparents house. The problem with the latter is, my mother lives in that house now, so I'd have to move back in with her - and we get on great, IF we don't live together.
Zero housing costs is quite empowering as a thought, considering I'm part of 'generation rent' - it gives me spending leeway that is generally only for people much older. Do you own? If you rent, can you move to a cheaper part of town? Or if you own, can you rent your living room out? There are many ways to make money stretch if you aren't already on the floor. Perversely, it's easier to make more if you already have some.
For instance, I could either go abroad for SRS and pay, or wait for the NHS. I'd rather do the latter if there looked to be a seriously dwindling amount leftover. I already booked and cancelled a nose job because it's for vanity rather than necessity, and I actually don't mind it being a little bent - it's hardly rugby player style squashed, and my mother has pretty much the same nose but without the break, so it's not out of female bounds.
I don't know if you're a student or a graduate, or which country you're in, but my bank gives a £10,000 interest free loan to anyone employed, within a decade of their graduation date, with no stipulation of what it can be used for. That would pay for a decent amount of stuff if you are able to access something similar. Might be worth finding out. I really do understand your predicament - a few years ago I was virtually bankrupt, had lost a great career, and could barely function because of PTSD, but just don't give in to it. Keep going, and it'll turn round.
This is superficial and somewhat mercenary - but if you're young, of course you'll want nights out and holidays. My advice, tried and tested, is instead of budgeting for a whole night out somewhere mediocre, budget for buying one or two great drinks somewhere you're likely to meet interesting cosmopolitan people who will pay for the rest - go to the most expensive district, and you'll actually save money. But don't be a taker - honestly give your friendship and anything else you've got in return. A great positive of this is you'll end up with a very diverse and international group of friends, the kind of people who don't care about trans stuff, let alone being prejudiced...
They might have a great place to stay when you go abroad. In return I'm happy to put their student kids up at my flat if they want to use it as a base for the UK and Europe. There's a way to do everything, and it doesn't need to include taking advantage of people or denying yourself a lifestyle right now.