You missed nothing unless you made zero profits, if you sold your shiba inu very early it's because you already doubled your money, it's a smart move honestly because ask yourself this question, how many projects have became so good as shiba inu in the past months till date? Many meme coins tried to but no one was as good as shiba
Similiar to my crypto lesson 2015/2016. Back then I bought a bunch of Ether for $0.92 each and sold them a year later for around $11 each. Made a ten-bagger and I thought I am a great invester and this was a good deal. Well, few months later the price was already >$100 and I bought some Ether back
I don't even want to think about the price today 