I think that it can if you are following accounts that could have a negative impact on you. There are tons of creators who create educational and positive content that one can choose to follow too!
Yes they do, but that mainly depends on how you use social media. There are many good reasons and ways social media has an impact on the world. Use it well!
Yep.
These platforms allow you to create your own view of the world. Worse, though, they feed you content to get you to click, not because you like it. So your view of the world around you is made to change based on what you click on, not what you want it to be.
Yes, there are even a few studies about it. Search information about "filter bubbles" and the relationship between social media (with algorithms) and polarization of societies.
That should give you more than enough information about the topic.
As people already said here, It depends on how you are using social media.
The most thing I like about social media right now is that even if they are across the world I can easily find talented artists and interact with them. They are inspiring me in a positive way to work on my creativity.