LyX and Harvard Cite Them Right?

Is there a (hopefully easy) way to use Harvard Cite Them Right (CTR) bibilography style with LyX? I recently starting using LyX v2.3.6.1 for my thesis and, although I'm still finding my way around it, I really like it. So far I've tried Natbib (BibTeX) and Biblatex (natbib) mode but nothing

tmp/lyx not a readable file

loading another file gives /tmp/lyx_tmpdir.PrXtIVAGvvMT/Buffer_convertLyXFormatetZcbC.lyx ist kein lesbares LyX-Dokument. Must inquire why. Perhaps remove the tmpdir? Must inquire why. Perhaps remove the tmpdir? error occurs again after removing it and trying the lyx file again The terminal