Thanks for all the suggestions.
The plugin obsidian-counter would actually be exactly what I’m looking for. I have copied the appropriate files and also see it in the plugins list, but it won’t activate.
But also this plugin tracks the file changes itself with all the related problems (I use Obsidian on 4 operating systems Mac, Win, Android and iOS).
Does really no one have an idea how to read the data that is intrinsic in native Obsidian Sync?
Having the change history, just the days a file was changed, accessible with Dataview would be a big step forward for me.
In the meantime, I’ll make do with the solution already presented in my prevous post.