1: I will never trust an exchange, most especially centralized exchanges e.g FTX Binance, etc.
2: never n trust any other coin aside from Bitcoin
Good for you, most importantly this are the two aspects we consider as weak point for many investors when they were actually eager to invest but not considering the type of coin they are investing with and the exchange they use as well to have their investment through, though it is believed that the reality is that our coins were not stored on the wallet or exchanges we use but rather on the blockchain and then encoded with an unblocking keys to access them through our various wallets or exchanges, now it will be immature enough to let exchanges have the access to decode the access to them by providing you with their own public keys and have the control in their custody, if you don't have the keys then you don't have the coins, that's why most now preferred wallets for their storage because of the keys it provides you.