sudo snap remove firefox
sudo apt remove firefox -y
sudo add-apt-repository ppa:mozillateam/ppa -y

# Set priority
echo "Package: firefox*
Pin: release o=LP-PPA-mozillateam
Pin-Priority: 1001

Package: firefox*
Pin: release o=Ubuntu
Pin-Priority: -1" | sudo tee/etc/apt/preferences.d/mozillateamppa >/dev/null

sudo apt update
sudo apt install firefox -y