Can I load an old version for my mac 10.7.5?

edit

Yes you can. According to the System Requirements page at link text "LibreOffice 4.3 can still run on OS X 10.6+, but please understand that this support will end when 4.3 is retired on May 27, 2015."

So here you go, you can get v4.3 here for OSX 10.7 link text