Forecast NOT WORKING week format

Hello guys

This is not my first post about this subject but I REALLY need help to solve this.

Why does the Forecast to this chart do not work?

I put in X-axis the WeekNum ( till week 44) with respectives WeekDays (7 days a week) and, even all of it being numbers, the forecast do not works for me.

Already did: Read all topics and watch all videos about forecast and its limitation, and nothing helps me or explains me why this won't work.