Centralized exchanges are very important exchanges but I'm always scared because they can easily be hacked and only one key is given just as you said in the post.
Binance is my favourite exchange because of the security measures they have but there is a lot of stress during registration. I'm so happy you put it as one of the changes. Your post is good dear and self-explanatory, ride on dear.
To be honest, the security measures in binance are a bit strong. For instance, during the withdrawal process, they send OTP via email address and phone number. So, you shouldn't be scared but it is ideal to save your password in a secure place.
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