3 Flutter animations ready to use (RIVE or FLARE or RIVE 2)

i need 3 animations from the video attached:
1. the white rectangles/lines which are moving to left/right in the background (I need it with transparent background)
2. the box opening animation (only the white elements, I don’t need the box and no background needed). You can see it in second 3.
3. the item showing animation (only the white elements again, I don’t need any items created and no background needed). You can see it e.g. in second 4

General requirements:
– Resolution: 1080×1920
– Portrait, not landscape
– Ready to be used with flutter (like a .flr file)