WhatsApp is not limited to your phone. There is a web application to synchronize all the content on your phone and a desktop application.
Visit https://web.whatsapp.com/ or download the desktop application from whatsapp.com/download/.
You’ll then need to open WhatsApp on your phone > Settings > WhatsApp Web/Desktop > Scan the QR code on the browser or Desktop app > Follow the instructions.
Both web and desktop applications will provide chat and alerts on your computer, so you can respond quickly and easily.
Your phone needs to be connected to work properly, but if you lose the connection. Then, the web application will stop syncing until you restore the phone connection.