Can't update Mac OS
Received a MacBook Pro for Christmas (Mid 2009). It's running OS X El Capitan Version 10.11.6. I can't download Pages or Microsoft Office (only two I've tried) because it says I need a newer OS version. I tried downloading the newest version, Catalina, but it says I can't download it. Any suggestions? Thanks
MacBook Pro 13", OS X 10.11