You need to look carefully into your institution's dissertation formatting requirements. I've not gone through the process myself, but have heard of people having to reformat their dissertation after not following the University's specific requirements.

While these can all be addressed through styling, you'll end up doing a lot of this styling yourself. Most people use Word or LaTex because they can start with an existing template from an earlier student, or ones provided by your institution.

The formatting details are tricky enough that some universities provide, for example, weekly free walk-in group sessions - https://gradschool.wsu.edu/pdi/submitting-thesis-dissertatio... . The people who provide the help are more likely to be able to help with Word and LaTeX problems than a less common system.