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Now i still want know when the bitcoin price falls, who are those the fallen prices directly or indirectly affect the most?
Fallen prices can affect any class of investors regardless of how you view them, it doesn't matter whether they are the rich or the poor class, even experienced investors could be affected, which depends on their mindsets and investment plans. The only class of people that might be affected less are the true HODLers, they don't care about liquidating their assets any time soon but they can't be so comfortable with a persistent falling asset either. Every investor likes their assets appreciating, which is what gives them joy, but if it is doing the opposite, it's practical to have the opposite feelings too.