2024
https://www.linuxcapable.com/install-telegram-on-fedora-linux/
https://idroot.us/install-telegram-fedora-41/
    sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
    sudo dnf install telegram-desktop
    sudo dnf install --allowerasing telegram-desktop
    ...
    # sudo dnf install https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
    # sudo dnf remove telegram
    sudo dnf config-manager --set-disabled rpmfusion-free
    sudo dnf config-manager --set-disabled rpmfusion-nonfree

apt
    sudo add-apt-repository ppa:atareao/telegram
    sudo apt update
    sudo apt install telegram