From The Economist: «Nearly 63% of #Instagram users report being miserable [about the time they spend on the platform], a higher share than for any other #social network».

Article (with metered paywall): https://www.economist.com/graphic-detail/2018/05/18/how-heavy-use-of-social-media-is-linked-to-mental-illness

The article includes the graph below. It's interesting, but there is a big mistake in it (there are two sets of data for LinkedIn) and the sample is biased, so take its content with a grain of salt.