I posted on the bugs and glitches forum( or a similar forum) for help, but get almost zero replies compared to the rest of the other posts, why?

Maybe because not many people know how to fix the bug

Could you link the post? I'll take a look

(Most Scratch users are in the US if you live in Singapore it might've went all the way down)

Maybe it was due to a lack of wording. Did you clearly explain the issue? If the issue is not clearly explained, people won't know how to respond.
And, like @lavedergirl123 said, it could be because people don't know what to do about the issue. Maybe it's a rare one they've never heard of and thus they can't replicate it.

@dinoparty0
Here is the link to the post
https://scratch.mit.edu/discuss/topic/882947/?page=1#post-9166412

Yeah but currently there is one person who responded which is good on that post