please explain me why bitcoin will make another all time high
or explain some circumstances in that bitcoin's price will go more low and never or after long times later comes
Those who say that bitcoin price will never come up does not really know about the bitcoin and cryptocurrencies. There is always been up and down phases for bitcoin and currently we are having a bear phase.
If you ask me why bitcoin will again make an all time high then you need to understand the fundamentals of it and also understand the current economic model based on fiat currencies and its drawbacks.