Have you ever thought about what would happen to your assets if you suddenly pass away alone at home one day?

Recently, a programmer from MiHoYo suddenly died alone at home (including a single woman in Shanghai a few years ago who also died suddenly; her assets seem to have been confiscated?).
I think this kind of situation will become more common in the future, or even now, as more and more people live alone. So how should they plan ahead and handle their assets in case they suddenly pass away one day?
Yesterday, a channel owner I know had a heart attack and was just rescued.
They still updated their channel and posted a notice of their critical condition.
Some people really don’t dare to stop.