Much like @Minholkin, I knew not a single person when I joined CoSo. I met a few in October 21 who welcomed me with open arms. Then I went back to Twaddle, and returned for good in April this year. And when I said "I'm back", the welcome I received was truly heartwarming.
This is all to say that if you open yourself, and leave behind the way you felt you had to be on other SM sites, you'll be amazed at what you've stumbled upon.