Do not put your coins or tokens on the exchange. Whenever the exchange can become a hacker's goal. I also agree that small exchanges are unattractive for hackers. But there are such cases. Such small exchange altmarkets were also hacked last year.
I think you are too paranoid to trade. some exchanges have trusted security, and don't have a bad reputation.
I won't say it because everyone might know him and never have a problem with that exchange.
I'm sure you need a good reference to choose a trusted exchange.