Can you elect to do your chemo at another hospital that does offer them? I did do cold cap but I had to do it at the local private hospital and use my private health insurance. I still did lose a lot of hair and had to cut it super short at the end of chemo, but I didn’t go bald so while I gave this weird haircut now I was able to keep everything a secret and still attend things for my 8 year old daughter which is what I wanted, I’m sure people wonder why my hair is like this now instead of my previous long hair but no one has said anything
in regards to the byo caps I followed a lady in instagram who did it and it looks like a lot of work, you need to have multiple caps and keep the caps on ice and kept at a certain temperature and changed at certain intervals, this lady had to take her mum to every session to help with it all, it did work but it looked expensive and tricky.
Best wishes with whatever you decide