There is no normal being that loves getting losses on business, career, investment and trades that's why even company holders make financial policies to keep record of investment and profits flows. And unlike other business bitcoin also makes sales and losses if you do not invest wisely....is nice when you put in what can not put you sickbed or gives you hypertension, don't invest out of what you cannot withstand the loss.
Is better to use small money or learn risk management first before investing especially newbies.
Absolutely. Only use spare money and that money you are willing to lose. It's like getting into the university again but this time your own failure will be the one that will teach you. And guess what? If you have the proper risk properly, and you are able to follow it very well, you will last long in the game. You may not have big returns, BUT you will last long enough to learn want you need to learn. And what I believe newbies will need to do. That's the beauty of it.