That's the thing I'm struggling with, I actually want to put in more money. But I just can't afford to, I want to maximize on the buying opportunities but I know that's the FOMO creeping in, and I'll just have to stay patient.
Since you are thinking of a long-term investment, I will suggest you diversify your portfolio but Bitcoin should be your major concentration because if you buy now that the price is down, you will be able to make a profit when the price is up again but remember no one can predict when the bear will end so your investment should not be done with all you have got so you don't end up not making gain and lossng your capital. Always invest with the amount you can afford to lose, good luck.
I used to think that diversification of the stock portfolio is just beautiful words, but only 2 years have passed and my opinion has changed greatly, I realized that you should always invest only what you are prepared to lose and no more, sometimes the risk is justified, but only if there is a financial cushion, and there is something to risk. My advice to newcomers - is not a hasty study of the basics of the cryptocurrency market and ecosystem projects (need to delve into the study of a particular coin), but my opinion, that BTС is a favorite ..