Correct. I agree with you that investing in bitcoin is a challenge for us. Moreover, the price of bitcoin or crypto currency in general is very volatile. so investing in cryptocurrency requires the right strategy so that we can get satisfying profits.
You should exclude altcoin from your investment plan even though bitcoin and altcoin also fluctuate. When you can plan your investment in bitcoin, then you may get satisfactory returns which are well worth the investment budget you have. Altcoin volatility depends on bitcoin volatility
[it's common] so try to get more bitcoin in your portfolio instead of being dominated by altcoin. After all you can also expect different volatility between bitcoin and altcoin and find benefits in the long term.