None, to be honest at this point. Facebook and subsequently instagram changed things up and are now ad-ridden and have a massive amount of privacy issues.
Snapchat sorta died off with people I know. Not to mention that shady tracking feature.
Twitter seems to have a community problem.
Don't care for tik tok (I'm probably too old for it).
I use twitter, instagram and reddit for now tbh.
I despise Tik Tok, I still don't understand how this many people love it.