I have Facebook to sign up for web-sites quickly, but apart from that I have no idea how to use it. I use VK (russian version of FB) daily though.
I read Twitter timeline daily but I almost only follow newspages and celebrities. I used to tweet a lot, but now I don't feel like tweeting at all (but sometimes I make myself writing something in order to make it memorable or something

)
I use instagram, but now I post way more seldom (because everything is ugly rn including me), but I will post more in the summer I think.
I basically lost interest for social networks and guess I'm becoming more of an irl person with each day.