when trust is lost, there is no exchange that you can use to store your assets. the best is your personal wallet. But you also need an exchange to trade. I still trade on Binance and it's my place to make profits. it's risky but it's each individual's responsibility, I also don't fully believe it. Binance is still my choice of course. make periodic withdrawals when it's better than depositing it in an exchange wallet.
I also didn't lose my assets on FTX, because I didn't use the FTX Exchange at all. But I lost trust All crypto exchanges, the mode is the same. In time ponzi will collab.
Fud to binance has been thousands of times and all of them have not worked, because I also believe that binance can survive because from the inside the roots are already strong. However, yes I agree with you, it's better to keep assets in a cold wallet that makes us a little safer.
But, not all FTX users did lose their assets because they always make it a habit to withdraw right after using an exchange as they are also aware about the dangers of keeping funds inside it. I think those who got badly affected are the ones who invest on the native token of FTX which is FTT because it also suffered after the collapse of the exchange.
Even though we have no involvement in FTX whatsoever, we are still affected indirectly because the incident causes an impact to the crypto market but luckily that was over and the market have now recovered. There are still trusted exchanges out there but we shouldn't only give all of our trust on them.