I sorta did this from 2020-2021 after I graduated university. Lived at home for a year while learning topics that interested me. It was one of the best things I've ever done and my confidence and outlook on life improved significantly as a result. I was always in "the system" but I never thrived in it. Felt like I was always doing stuff on other peoples time and penalized for deviating from whatever rigid guidelines they dictated. Being able to do stuff for myself and on my own schedule was liberating. Motivation I lacked for most of my life was present because I actually had a personal stake in my learning.

And with that being said, I have no idea how you unschool as an adult without having significant capital. I wanted to unschool for a long-time prior to 2020 but working/doing school 8 hours a day left me with little energy. I was fortunate to be able to live under my parents roof rent-free in 2020 and the COVID relief money I received from the government was enough to let me purchase the resources I needed (lots of books). If I didn't have these benefits I doubt I could do such a thing. I definitely couldn't do such a thing if I still had to work full-time - believe me I tried many times.

Not to mention there is a lot of stigma around doing this as an adult if you don't have capital. I'm young and don't have any dependents so the consequences of potential failure weren't as significant. But if I did? I think that would create a lot more crippling self-doubt throughout the entire process.