Sorry to hear but this is a fact. I have been a victim of this many times, But in forex trading. The point is to learn the lesson no matter how it is learned. The easiest way to avoid this kind of experience I think is if you exit a project and it gets pumped then at least avoid getting into it again or should wait for a long correction.
yes, and that experience seems to almost everyone who has been in the crypto world for a long time. the same thing happened to me too, it's just, the coins I hold, I never sell them, even when they hit high ATH. it made me regret when the price of the coin dumped so far. Even today, I still hold on to it. because from that experience, I always take the opportunity when I have made a profit, and avoid entering a project when the price is still very high, or still reaches its ATH.