The best place to get the right information about the Luna crash incident is through search and read multiple sources of the cause, but what I can tell you is that, the Luna tarra project was doing incredibly well until there was an incident involving the CEO and there after the Luna stable coin lost it pegged to USD that was when the whole thing crashed, before it gradually recovered to the current market level.
LUNA crashed was so "hard" that not even a new iteration of the project (dubbed Terra 2.0) had any success. The brand/name is already tainted. Especially when investors lost a lot of money as a result of the crash. I've noticed that after the downfall of Terra/LUNA's UST stablecoin, algorithmic stablecoins came down to a "halt". All of the stablecoins you see right now are either collaterized by crypto or backed by real Fiat. Perhaps, the market learned its lesson after the LUNA scandal.
Not only LUNA became history, but also the FTX exchange. One thing came after another, causing a temporary blow to the entire crypto industry. Thank goodness we're already past that. Regulators are now paying close attention to the industry, so the odds of something like this repeating itself in the future would be slim. We'll see what happens...