...often times I ask myself outside the fact that when people made withdrawal it affects the price going down and when people invest high capitals it increases the price automatically
What happens when price falls as a result of withdrawal is just simple panic and that typifies market reaction in the negative. A lot of investors who aren't chart readers take their cue unnecessarily from what they see others do, whether good or bad. So, they find others selling; they also sell. They find others buy, they FOMO and buy It's a ripple effect that is capable of causing panic selling or frenzy buying. Price will expectedly crash when supply gets higher than demand or rises because demand gets higher than supply. It's a natural market dynamics that fixes price not anyone.