This comment comes across as quite naive. If the solution were truly that simple, we wouldn't see so much people suffering from depression, anxiety, addiction, etc. around the world.
AFAIK - "Doomscrolling can also be defined as the excessive consumption of short-form videos or social media content for an excessive period of time without stopping"
I also lost a dear friend to suicide and he was very succesful and active on his field when it happened. Nobody saw it coming.
It's just not that simple.