I am using software wallet called 'electrum'. I downloaded it from the official website 'electrum.org'
Is this safe wallet?
Sorry, I am not fluent in english. Please understand me.
Electrum itself is safe because it’s open source which means many experts eyes already review their code for safety purposes. The safety problems rely on your side including but not limited to safe keeping of your private key/recovery seed phrase, protecting your device from malware and other form of attack that will exposed your key to hacker.
It’s better to invest on hardware wallet to guarantee that your asset will be safe forever since it’s airtight. Just use a quality brand that offers security and transparency.