#option1
wget https://packages.microsoft.com/repos/ms-teams/pool/main/t/teams/teams_1.3.00.5153_amd64.deb
sudo apt install ./teams_1.3.00.5153_amd64.deb

#option2
curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
echo "deb [arch=amd64] https://packages.microsoft.com/repos/ms-teams stable main" > /etc/apt/sources.list.d/teams.list
apt update
apt install teams