I figured out the issue is the settings of this community. By default, every user of Lemmy.world has a default language of "Undetermined" and all the posts/communities which specifically selected English as their language, doesn't serve the content to the Undertermined users. I wasn't able to see any of the posts made here when I was making this post. After I included English in my languages, all the old posts have appeared to me.
I recommend if there is a setting like that for this community, have both Undetermined and English as languages to open up the community for more users.
I was finally able to find your comment on Liftoff app. For some reason, I am unable to see some comments and posts on Lemmy.world website.
Infact I made this post when I was unable to find any posts here. Today when I was using Liftoff app I was able to see that there are some posts here. Idk why this is happening.