She had only one serious problem that the press focused on - emails - and they zeroed in on it and hammered and hammered and hammered on it so that it looked like a bigger deal than it was. On the other hand, Trump had 2 new scandals a day and it was difficult for all of the press to focus on one thing obsessively until it stuck. As soon as they dug their teeth into one, a new one popped up to divert attention from the last one. As a result, his scandals, which were much bigger and more consequential than anything related to Hillary, never got any real traction or did any serious damage to him.
And that's what's been happening throughout his presidency. Some of it can be blamed on the media's shallowness, lack of focus, and obsession with the latest shiny object. But a lot of it I don't blame on the media because how are they supposed to cover everything in depth (especially with fewer resources) when things are coming at them from all sides every day like this? It's just too much - like trying to drink from a firehose.