If you are not wise in using social media, it will endanger you, for example, in the case of cyberbullying. Cyberbullying is due to not getting supervision and guidance from parents. There are no restrictions on the use of gadgets, and parents don't have an understanding of what can be done and what can't be done. Children or people who do not receive guidance will act as they please on social media, which unknowingly invites ridicule and cyberbullying.
Social media is addictive; people can feel addicted when they already use social media. The addictive nature of it brings negative impacts such as distraction. People will find it difficult to focus on getting things done because they feel distracted when using social media, and, in the end, the work they do is not finished on time.
The two reasons above, cyberbullying and distraction, are some of the many reasons for the adverse effects of using social media. There are many other adverse effects of using social media.