If you are looking for a non-petpetual MS Office License, I would recommend [link|https://www.microsoft.com/en-us/microsoft-365/p/office-home-student-2021/cfq7ttc0h8n8?activetab=pivot:overviewtab|MS Office 2021 Home & Student|new_window=true]. If you need the professional version, it's available [link|https://www.microsoft.com/en-US/microsoft-365/p/office-professional-2021/CFQ7TTC0HHJ9?activetab=pivot:overviewtab|here|new_window=true].
If you're just looking for a decent office suite, there's always [link|https://www.libreoffice.org/|Libreoffice|new_window=true] (download links [link|https://www.libreoffice.org/download/download-libreoffice/|here|new_window=true] or type sudo apt-get install libreoffice into any debian-based Linux distro).