Electrum is an open source Bitcoin software wallet.
Electrum is a Bitcoin wallet that is over 10 years old. The trust of users who use Electrum wallets has been proven since 2011.
Users' private keys are encrypted.
Electrum is also the lightest wallet to use.

You can see all the features of Electrum on its website: https://electrum.org/
Electrum is available on desktop and mobile.
We recommend using the desktop version of Electrum. It's easier for you to use. Choose the Multisig one.
You can find out how to use the Electrum wallet at the link provided.