Hello,
Greetings for the day! I’m an, Independent Advisor and Microsoft user like you and I'm glad to provide you information regarding your scenario. Sorry to know that your phone has been broken.
To login into WhatsApp web, you have to login with your WhatsApp mobile account. Or else you can try to install the desktop version and try to log in. But this will not have the complete backup of files. You can use all contacts and groups.
https://www.whatsapp.com/download/
Hope this information would be useful to you. Please feel free to get back if you need any additional info.
Thank you! Ravikumar Help the next person who has this issue by indicating if this reply solved your problem. Click Yes or No below.