Sorry for the Danish post i hope you can translate it.
The Ministry warns that Microsoft programs can create problems for written exams for students with Mac computers.
Users who have updated the programs to the latest version may experience the programs running slowly, freezing and crashing. This means that the examinees are delayed in their work and that parts of the answers risk being lost, write the Agency for Education and Quality and the Agency for IT and Learning in a notice to schools.
Nextcloud is a lot of things. A bit overkill for just it’s office offering tbh. But, if it fits your workflow, and you like other things it offers go for it. The snap package actually makes it very easy to tinker with (despite the deserved hate of snaps in general).