Note : Make sure you watch the video below, to install whatsapp without any problems!
About WhatsApp
WhatsApp is a freeware, cross-platform, centralized instant messaging and voice-over-IP service owned by United States tech conglomerate Meta Platforms. It allows users to send text, voice messages and video messages, make voice and video calls, and share images, documents, user locations, and other content. Wikipedia
Method 1
Make Sure Your System Is UpTo Date
sudo apt update -y && sudo apt upgrade -y
Installation of essential dependencies
sudo apt install snapd && sudo snap install core
Setting Up Snap
sudo systemctl restart snapd && sudo systemctl enable --now snapd apparmor
Snapd Installation Documentaion: https://snapcraft.io/docs/installing-snapd
Installing walc(Unofficial WhatsApp Client)
sudo snap install walc