Kicksecure is based on Debian, so most Debian-compatible software can be installed using standard procedures.
Visit the ExpressVPN Linux setup page and sign in to your account.
Download the Debian .deb installer for Linux.
Open a terminal and navigate to the directory containing the downloaded .deb file.
Run this command: sudo dpkg -i expressvpn_*.deb
After installation, activate the application using your activation code:
Run the command: expressvpn activate
To connect to the fastest server:
expressvpn connect
To connect to a specific location:
expressvpn connect [LOCATION]
More info here:
https://www.expressvpn.com/support/vpn-setup/Trezor Suite is available as an AppImage for Linux, which is compatible with Debian-based systems like Kicksecure.
Visit the official Trezor Suite page and download the latest Linux AppImage.
Import the Trezor signing key:
gpg --import satoshilabs-2021-signing-key.asc
Verify the signature:
gpg --verify Trezor-Suite-*-linux-x86_64.AppImage.asc
Navigate to the directory containing the AppImage and run:
chmod +x Trezor-Suite-*-linux-x86_64.AppImage
Execute the AppImage:
./Trezor-Suite-*-linux-x86_64.AppImage
More details at
https://trezor.io/learn/a/download-verify-trezor-suite 
