Thanks for the explanations , everybody. Now i have understand. Anyway , Are there any alternative rather than Electrum wallet. Anything can happen in crypto. If electrum wallet hacked , then what else we can do?
Electrum is one of the most trusted and secure Bitcoin wallet that can be used to store your Bitcoins. If you are looking for an alternative, there is a topic at the top of this board:
[General] Bitcoin Wallets - Which, what, why? I suggest you check it out. There is also an extensive list of recommended Bitcoin wallets at:
https://bitcoin.org/en/choose-your-wallet The most important thing is to keep your private keys (or backup seed phrase) in a safe way.