Well it's the crypto market and you must see it go up and down, so I don't really know why you are surprised about the price of a coin going up and down when it's not a stable coin, it is being traded every second and nothing can stop that unless everyone lose interest in the coin, but I don't think that would ever be possible for dogecoin since it's one of the coin that have been existing for a very long time now, I think you need to study how the market works so that this kind of things is not going move you anymore.