For this year Bitcoin will not go down at $30k, this is impossible for bitcoin, if you look at the current stable market conditions, I believe the scenario this year will be much different from 2018.
Even altcoins that did not have good expectations this year, actually rose quite well in the market, even though the increase in altcoins was not what people wanted, but what we need to understand this year is that the condition of all coins is good and growing.
This topic was started on July 20 which means that the price was nearly under 30k and that is why there was a scare that the price would fall down, I understand it because the price went under 30k for the first time in a while, it peaked over 60k before it did something like that and I believe that there was a good case to be made for the price to go down.
However we all know what happened after that, hindsight is 20/20 and I understand why we can think that it will not go under 30k ever again, not just these days, we may never see under 30k ever again in history, however back in those days we have seen under 30k and the scare to see under 20k was very real, I felt that too, I wasn't scared about it because I like it when it goes down, it allows me to buy more but that doesn't mean that we knew it would go up neither. Thankfully it is doing a lot better now.