MS Office is simply the only good thing they (Microsoft) ever created.....A document written in libre office or any other office application is highly compatible with MS Office since it has an automatic feature called "compatibility mode". However the other way round is not true. Documents written in MS Office are not completely compatible with other office suites. But libre office is a good office suite and works very nicely most of the time.
I recommend WPS Office because it works the best.
Read my post here:
The snap version that I mentioned in that post was un-bloated by an independant developer and hence, it works very good.
The description says:
To prevent leakages of private data, the plug for internet is disabled, which prevents WPS to call home in China. Enjoy WPS securely!
Softmaker FreeOffice and OnlyOffice are also very good.