A filter envelope adds movement
An envelope can move the filter as well as the volume. Each note opens the filter and lets it close again, so it starts bright and settles darker.
That is the pluck on harps, guitars and synth arpeggios. Amount sets how far it opens; the dashed line on the Filter graph shows how far.
Your turn. The filter is set up for you. Add the Filter env: each note in the target starts bright, then quickly goes dark.