Why i loss my xp?

Day by day my level xp going downword

Your xp gets taken away if you spam, so stop spamming!

No, it goes down either way, regardless if you spam or not. It goes down daily.

Maybe delete topics or separate your posts.

@mixtape_maker, i don't think it goes down daily - it won't make sense. @Muhammad0313 was clearly spamming threads a few days ago.

To be exact, if your posts are judged to be spam, you will lose 10 XP per spam post.
Source: https://gamehag.com/forum/t/58039-penalitiesxp-taken-away-bans-and-more

You also lose exp when you delete your form