Not necessarily. You mustn’t lose money to gain instead you must be open to lose money to gain. You can invest in Bitcoin and your money never drops and rockets up to gains. But just bear in mind that it could be the exact opposite. So having an open mind is the best thing to do.
If its how it work, Bitcoin isn't for a low income earner as well as not gonna make you rich when you can't invest something tangible to it.
Bitcoin wasn’t designed for the rich. I can’t find anywhere on the whitepaper where Satoshi said that you should be rich. Instead, they made it possible for anyone to own really tiny bits of Bitcoin. Do not forget the main reason it was created (not to make money but to manage your money).