But stop loss limit is only available in trading in CEX. In the case of Dex, is it possible to create such tools that will identify a large dumping at a certain distance as a trail risk and at the same time sell it like a stop loss limit?
Automating stop loss on DEX, never tried it before, but I am sure with little coding you can create an automatic bot for you. I am not using one or never used one because I never had to. But there is one distinction I have to mention that liquidity in DEXs vanishes quickly, so let's say you bought at $10/piece and set $8 as stop loss but even with your stop loss on DEXs you failed to stop loss due to lack of liquidity because it can be affected due to high slippage, and liquidity disappearing.
There are such tools, but maybe they can't help you in catastrophic events like FTX in DEXs.