Sorry to say that the only way for you not to lose your money in trading is by not trading at all. In other words, do nothing but simply let your money sit there and remain it as ease. By letting it sit in your bank account, your money won’t grow or fall.
Yep. If someone is afraid to lose money, he shouldn't try to trade at all. 
There is always a chance to lose money in trading, it is something unavoided. Expert traders must have experienced many losses before they have enough knowledge and experience in trading. No perfect trader who never failed at all.
You are right, just store money in the bank account if someone feels worried about losing money.
You can’t be successful without taking risks. In crypto trading no matter if you are a newbie, beginner, average joe, pro or a guru, you are not exempted to experience losses in trading. The market is the master around here which is unpredictable, so anything could happen to the price movement without warning.
Sure, no success without failure. A successful trader must ever face failures, but never stops and continue learning more. If someone isn't ready for the possibility of losses, he won't have a chance to succeed in crypto trading. Crypto market isn't something easy to predict, there will be always risks of losing money.