?‍♂️ You can create your own whatsapp app

?️ Creating Your Own Whatsapp Desktop App

• ?‍? Type terminal sudo -H gedit /usr/share/applications/whatsapp-webapp.desktop
• ? Copy following text to opened screen

#!/usr/bin/env xdg-open
[Desktop Entry]
Name=WhatsApp
GenericName=WhatsApp
Comment=WhatsApp desktop webapp
#Exec=webapp-container --store-session-cookies --webappUrlPatterns=https?://*.whatsapp.com/* --user-agent-string='Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36 Edg/85.0.564.44' https://web.whatsapp.com %u
Exec=/opt/google/chrome/google-chrome --app=https://web.whatsapp.com/
Terminal=false
Type=Application
StartupNotify=true
MimeType=text/plain;
# If you want icon, type path of icon
# Icon=
Categories=Network;Application;
Keywords=WhatsApp;webapp;
X-Ubuntu-Gettext-Domain=WhatsApp
StartupWMClass=web.whatsapp.com

? If anyone see 'update your browser' warning, you have to update --user-agent-string on line 6 respect to User Agent String (thanks Gangadhar Jannu)

⌨️ Making keyboard shortcut (Optionally)

You can follow the instructions below or just look my other answer about Making Shortcuts topic.

wmctrl command used for focus or create app, type sudo apt install wmctrl to install it

• ➕ Open shortcut window, click + the bottom of the window
• ? Set name Whatsapp Chrome
• ? Finally, keyboard shortcuts to open | create

bash -c "wmctrl -xa web.whatsapp.com || /opt/google/chrome/google-chrome --app=https://web.whatsapp.com/"