Some cases of hacking on exchange sites may only be manipulated, or insider trick. so the risk is not only hacking but a scam too. that's the risk if you use a centralized exchange site dude, they can be hacked or scam and lose you. You right, there are no exchange sites that are totally safe, there is definitely a risk of losing. but my advice is use decentralized exchange to reduce the risk
That's right! insiders could cheat their users and run away but it's stupid way for high reputable exchange, they could make more money by keeping their users than to scam them. Decentralized exchange might be able to prevent traders from hack but they might struggle in way of trading cause it always needs network for every single trade. You won't agree to wait 2 hours just to execute a single trade right?