@badrihippo You could use https://flathub.org/apps/garden.jamie.Morphosis to convert the document to PDF and then view it. This thread may be helpful, too: https://forums.puri.sm/t/mobile-libre-office/22799
(OS: I just noticed that I thought I had added Morphosis to @linuxphoneapps ... but nope, not yet. Will do once gitlab.gnome.org is up again 🙂 )