Wouldn't be surprised if it was Shiba or Doge as these coins are made to bump and dump. This is how the market works so no one is to blame here. If you are the victim in this situation becoming the liquidity provider to the sharks then blame yourself instead of the blame.
Shiba is listed on Robinhood and it is completely normal for sharks to take profits. If you were a shark, you would do the same thing.
No one can be blamed in terms of investing, let alone trying to blame others, because basically the investment that is started must have a good understanding, both shiba inu and dogecoins are altcoins, this must be understood, their concept is not the same as other potential coins, so I think it is the investment pattern that must be corrected, because if the investment we make is based on people's reactions, this can actually make us lose under any circumstances