Dogecoin was introduced as meme coin many years ago and people that are just mining it on faucet or in mining rig. By that time, Exchange for coins is not that famous because the coin itself has no value before and just use on for entertainment purposes. Most probably the OP is still new on exchange as well as transferring fund on it.
It was Elon Musk who made Dogecoin famous, it is his favourite cryptocurrency. There are some unconfirmed rumours that, Musk's support is behind the increase.