You scroll for 40 minutes through dead Facebook groups. Find a session. Link's broken. Try another. It's £18, not the £12 advertised. Six people show up instead of "always busy." You don't go back.
Organisers have it worse: texting 15 people at 9pm, chasing payments, answering "is there space?" for the fourth time today. All unpaid & after work. Why? Because you care. Sessions fail not from lack of demand, but because the system runs on free labour and goodwill.