What socials do you use the most for building in public, besides Twitter and Indie Hackers?

Hey there, I am starting to build in public for my product mapmelon.com and upcoming ones and was wondering what socials do you use the most to share your stories and progress, besides Twitter and Indie Hackers?

I also asked this on Twitter but didn't get any answer, what do you do to get more answers? Do you use a certain kind of hashtags? Do you tag some people in particular?

Thanks in advance