Libre office is dependable. But they are bit buggy when you open Libre Office saved Excel sheets is Microsoft Office Excel. That is what the real time feedback from real people say. Some accuse that this is intentional, but the fact is, it breaks. That is the only thing that matters.
But if you are using it on cloud, there is nothing to worry about because you are not moving the files out of the Libre office environment. Smart move if they are offering host it yourself version. 👍️