You are a newbie and I won't blame your carelessness of using a centralized system to safe your coins. I guess maybe,you must have imported your seed phrase of your blockchain wallet to your wallet. Laziness is what has caused your lost because spectrum wallet is very easy to understand and use.

Online wallets are not safe due to their vulnerability to attack,you have learnt a hard lesson and I feel for your lost. You use learn how to use electrum wallet to keep your investment  safe, try and learn more on the forum,to broaden your knowledge.