What did you learn? that you should have done or not.
this could be fun
Personally, I trade with luck of knowledge before, I just both penny coins without reading any details about that coin and in ended up a big loss for me. That's the first and last time I did that because after that I push myself to learn more about trading specially in cryptomarket.
If you wait to fall before buying, you are one of the wise investors. It's wrong to panic when you're falling.
Buying at a lower price is an ideal thing to do so, but you should know when to enter because it can fall harder or not, it will depend on your target price.