If you absolutely refuse to pay for software, use LibreOffice. It reads and saves Microsoft Office files (.docx, .xlsx, .pptx). It is free, open-source, and contains no malware. It runs perfectly on Windows 10 and 11.
The Microsoft Office mobile apps are free for devices with screens smaller than 10.1 inches. bit.ly office2013txt
Check if your employer or university participates in the Microsoft Home Use Program. Millions of employees and students are entitled to a free copy of Office 365 Pro or a massive discount (often 75% off). If you absolutely refuse to pay for software,