If you’re writing Word documents for your own use, to print, or to convert to PDF, you should be able to switch to LibreOffice seamlessly. However, if you’re emailing .docx files with the expectation that others are going to open them, make changes, save them, and send them back to you, you’re going to need Word or things will get messy. Office 365 online is probably your best bet.
I’ll echo what others are saying and tell you to learn linux at home first. Only use it for business when you’re sure it can do everything you need, and even then you might still want to keep a Windows laptop around in case you need it. Even though Linux is great, the rest of the business world still expects you to be able to work within Windows’ ecosystem.