People often mix up the 1929 crash with the great depression. Those things are related but not strongly so. A stock market crash does not lead to a major recession or depression. The initial crash was worse in 1987 then in 1929. But in late 80s there was no recession. So crashes are bad for people who have invested but it looks much more like a bubble in hindsight because of how it turned out. Lots of good companies…
https://en.wikipedia.org/wiki/1973%E2%80%931974_stock_market...
This one did result in a recession, during which some people who had lived through the Great Depression once again had to live about the same way again, for years, whether you wanted to call it another depression of not.
In 1987 and 2008 those were highly measurable stock drops but mostly concentrated in the stock markets themselves. Without as much consumer exposure, nor the world-destroying ripple effects from more dramatic drops over a longer period of time under conditions that were magnitudes more unstable worldwide.