LibreOffice (or OpenOffice) is a completely free, offline office suite. It opens and saves .docx and .xlsx files. No activation. No malware. No indexing servers required.
These activators are often laced with stealers. Once you run the .exe: index of kms activator office 2019 link
WPS Office is highly compatible with Microsoft formats. The free version includes ads, but it is legal and safe. LibreOffice (or OpenOffice) is a completely free, offline
Microsoft offers entirely free, browser-based versions of Word, Excel, and PowerPoint. You lose advanced features (macros, mail merge, pivot charts), but for 90% of home users, it works perfectly. Save directly to OneDrive. browser-based versions of Word