but now little worrying because I bought few bitcoin when the price bump in the thought that bull run has started.Anyone know the reason why the prices were falling and when it will be on the upward track?
You gave in to FOMO (rookie mistake) and on top of that you thought a bull run was bound to happen...why? Remember that just because there's a massive increase in the price doesn't mean that the upward movement will keep going until it triggers a bull run (btw, we might not see a real bull run like the one from last year in a very long time).
No one can tell you the exact reason behind the drop, but we can speculate and I'd say it's because of decline of the Bitcoin ETF hype, some people say the chances of it getting delayed (yet again) are very high, some others thing that a potential approval won't be enough to trigger a massive upward movement which definitly increases a bearish sentiment in the short-term, so the combination of speculations, rumours, and news are probably the reason for the dip in the price over the past few days.
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when it will be on the upward track?", could be once the news of Bitcoin ETF comes out, obviously, we'll have to wait for positive news. Or we could hope for the bulls to trigger another rally out of nowhere and with enough momentum we should test the 8.5k level again.
Also, its more like a sheep following the other sheep kind of deal, when someone goes up the others follow and when they go right everyone follows, so when market goes up everyone buys, when market goes down everyone sells, no one really just waits it out aside from couple of few people.
Typical human behaviour in this market. When there's a sudden drop (or spike) in the price, most of the people assume everyone else is panic selling (or fomo buying), so the Herd mentality kicks in.