and to be honest I feel relaxed and free whenever my money is in exchange because it very hard to get my seed phrase, pass key and the rest of them unlike Bank that someone can just penetrate without Bank sending you an OTP.
It seems to me that you are new in the crypto space and you are still finding it hard to know the difference between decentralized wallet and exchange, I am sorry if this statement annoys you but I'll have to say that you keep on learning more about crypto. It's even more riskier when saving your crypto in an exchange than decentralized wallet.
As Amphenomenon has said, consider a decentralized wallet that offers a seed phrase as well as a PK for better saving experience because that's the whole purpose of cryptocurrency. Dex wallet is the real definition of "Be your own bank"