If you want better compatibility with Microsoft Office files, you could use WPS Office. It has given me better results overall than OnlyOffice and far better than LibreOffice.

Not dissing the other suites, I like LibreOffice for daily use but there’s nothing I can do about M$ Office templates bugging out because they don’t follow their own OOXML implementation properly.

I always found so weird that the texts were in Castillian Spanish but the voice acting was in Latin Spanish.

I’ve consistenly made an Office 2016 bottle that works. I haven’t been able to activate it though.

The guide is in Spanish but it’s just importing the bottle and changing the language. Others have left ISOs available in other languages in the comments.

https://elsotanoenlared.es/office-2016-32-bits-en-linux-con-bottles/

Hope it helps!