The movie had a good start to it by giving the protagonist, Suzu, some backstory. However, the backstory was extremely irrelevant to the plot of the movie and the concept of a virtual world only adds to another confusing layer.
There's a lot of things to be said but the movie has already wasted enough of my time and it isn't worth to describe how utterly disappointed I am.
If you want to watch the movie, just watch it for the art style and beautiful animation. Everything else just serves as a PowerPoint slide of confusing, irrelevant and meaningless presentation.