Office 365 on the web works well on Linux if that has enough functionality for you. If not, the only way to get a modern version of the real Microsoft Office is in a VM. Older versions will run over Wine.
As far as alternatives go, OnlyOffice has the best reputation for file compatibility. I use LibreOffice and am very happy with it.
Avoid OpenOffice. It is really just an ancient version of LibreOffice.
Office 365 on the web works well on Linux if that has enough functionality for you. If not, the only way to get a modern version of the real Microsoft Office is in a VM. Older versions will run over Wine.
As far as alternatives go, OnlyOffice has the best reputation for file compatibility. I use LibreOffice and am very happy with it.
Avoid OpenOffice. It is really just an ancient version of LibreOffice.