It looks like all altcoins dump 10-20%. What is the reason?

I am very sad

The reason behind all these altcoin dumps is because of a bitcoin fork and fear of the unknown
Well, segwit2x is accepted by %85. why people are scaring? nothing gonna happen.and unfortunantly i have no cash to buy some altcoins at this low price... people are just paniccing but their money will come back.because they saw the potential of altcoins.