Bitcoin is still under $30k and still above $20k, of course it's not too late,
if you are still in doubt, maybe you can buy bitcoins or altcoins by accumulation,
so that the risk is smaller and of course make sure you have to divide your capital and don't buy 100% of bitcoins or altcoins .
Bitcoin price is in normal range now. Now we can invest in bitcoin or altcoins if we want. But we have to invest after thinking well before investing. After investment we can get loss. If the market condition is bad then there is possibility of loss. But we Who should invest for long term. Now we can't make profit if we invest for short term. Because now the market is going very bad so we have to invest for long term.