Why is BTC going down soo fast?
I have invested some money in bitcoin by the of 2017, and already lost about 20% of it.
Only 20%??
You're still good I would say.
Furthermore you only lose money where you realize those losses.
If you hold you're fine, but of course your portfolio has less value.
And why? Because the market was overheated. Every dummy was buying Bitcoin and crypto and thought he would be rich in a few months.
Smart money knows this and always teaches noobs a very hard lesson.
Welcome to crypto!