How do I invest and get into crypto when I’m broke?

Hi, I'd like to save money and invest in crypto but it feels impossible. I have 1500 a month before my bills and essentials need to be paid. By the time I'm done with bills I usually have anything between 500 to 800 left over for whatever. Lately I'm left with way less than the usually as the UK as gotten more expensive to live in. I'd appreciate any advice. I'm not looking to become a millionaire or anything crazy I just want to know I'll have enough to live on in my later years and maybe take 1 vacation outside of Europe a year. (I'd love to finally visit Japan!" It's just me and my dog who live together so I'm hopping I can save up a bit more than if I had a family.

Thank you for your kindness 🩷