How to filter a jittery daily meter

I’ve a very jittery daily meter, resetting at midnight:

I tryed simple filters using the examples on the docs: Filter - Home Assistant

those are the results (azure is low pass filter only, yellow is sma filter only)

they are both good on the main curve, but the problem is the start. how can I make the filter start from 0?

Hi wergio,
This what you are looking for?
Filter - Home Assistant.
Oops, I see you tried that.
Did you try a moving average possibly?

yes, moving average has the same problem: a initial curve, instead of starting from 0