I never had a problem with LibreOffice. But I also never encountered a situation at school where “advanced” MS office features where required. So, pure luck, I guess.
That being said, LO is not the only the only office suite for Linux. All of these have better MS Office support than LO:
- OnlyOffice: for the most part web based, but there is also a desktop app that wraps the web app into a local container. Free & open source, integrates with nextcloud.
- SoftMaker Office: Proprietary, paid solution, that advertises with having the best MS compatibility on the market. Based in Germany. Usually €99, currently €70 (or a €30 annual subscription)
- FreeOffice: Free but proprietary. Feature reduced version of SoftMaker Office (Comparison)
- WPS Office: Free but proprietary. Chinese, I had some problems with it when I last tried it to install years ago. Maybe they fixed them since, IDK
It’s actually not. It’s open core (a.k.a. 80% open source with its AGPL licenced community edition and proprietary with the enterprise edition that adds a bunch of stuff on top)