Exchange-based tokens can be a tricky game, and not all of them turn out to be winners. But hey, that's the beauty of investing – sometimes you win, sometimes you learn. Take this as a valuable lesson and focus on diversifying your portfolio with a mix of different crypto assets. The crypto world is full of surprises, so keep your chin up and keep exploring!
These currencies cannot be trusted and are too risky to use as an investment. There is no guarantee that a particular platform will be solid and that it will not experience difficulties at any stage of its operation. We have a good example with the FTX exchange, which collapsed in record time without anyone noticing anything, and how its distinctive currency, Ftt, contributed to the ease of that collapse.
I suggest that the use of any of these currencies be restricted when we use the platform issuing them. Having a few of them to use in the form of usage fees for the platform's features will not hurt much and will definitely be useful, while it is better not to use them for other purposes.