> i need help understanding why this happened

I don't know for sure but, as others have pointed out, yesterday's submission was the third time you'd posted it to Show HN. People have a low tolerance for dupe posts, especially if they're perceived as excessive self-promotion.

Also, your work might be seen as vibecoded and therefore "ai slop". I dont know if it is, but all it takes is a perception.

Finally, your work might be seen as a commercial threat by some people here - causing them to flag it.

> how i can share my work with HN community

Write a technical article about some aspect of what you've done. Talk about the challenges and how you solved them. Include a link to the repo. Put it in an external site (even github) and submit a link. If its interesting then people will notice.