If you want something reliable then you'd better invest in stocks because that's a real company with real business so you'll be safe. In crypto most of the coin have fixed supply so it's always depends on the demand of the coin itself. Crypto is known for it's volatility and there's a lot of project so it's hard to find something reliable.
For me, I choose to rely on ethereum which it's now demand by individuals due to its good, possibilities or chances. It's known as a promising coin that anonymous and no one who controlled .