Safe usage of Electrum (electrum.org) under Linux [closed]

Safe usage of Electrum (electrum.org) under Linux [closed]

I want to install and use the Electrum Bitcoin Wallet from electrum.org. Can you please verify my approach?

1. Create a live USB-Stick using Linux Mint. Make sure to properly verify the Linux ISO and cross-check the certificates using multiple download mirrors: https://linuxmint-installation-guide.readthedocs.io/en/latest/verify.html

2. Flash the USB-Stick

3. Boot the live USB-Stick and go to electrum.org . Double check that the correct site was opened.

4. Download the public keys from ThomasV, SomberNight, and Emzy from the website.

5. Download the same keys from other sources (at least two additional sites for each key).

6. Make sure the downloaded keys are equal and import them.

   gpg --import ThomasV.asc
   gpg --import sombernight_releasekey.asc
   gpg --import Emzy.asc
   

7. Install dependencies:

    sudo apt-get install python3-pyqt5 libsecp256k1-dev python3-cryptography 
   

8. Verify the AppImage:

   gpg --verify electrum-4.5.3-x86_64.AppImage.asc
   

9. Run electrum-4.5.3-x86_64.AppImage .

10. Enter the private key of my wallet and use it.

11. Shut down my computer and erase the USB-Stick with all of its contents.

Step 11 seems to be optional but I only want to use the wallet very rarely. The private key is stored safely outside of the USB stick so I can repeat this process.

Is there anything I am missing?