Hi evreybody,

During my last trip in Dolomite I make this sequence, but at home I can't find I way to defliker it.

Where am I wrong?

It's always difficult to guess without having more details.
But I could imagine thatit might be Lightroom introducing contrast flicker on such a sequence full of contrasts.
Please try editing less with non linear adjustments (like whites, blacks, dehaze, clarity, highlights shadows) and use the tonecurve for the basic contrast adjustments. You can use the point curve on the first images (this cannot be animated) and if you need to animate contrast do that with the parametric tonecurve.
Use the mentioned sliders in the basic panel only to a little extend because they tend to introduce contrast flicker on such sequences.

Also you should consider using a reference area for deflicker, as explained in my deflicker tutorial: https://lrtimelapse.com/tutorial/advanced/