Magnet Powder for Corrupted Pokeball

[Numbcargo]

I'm trying to get Ralts and I already have the corrupted Poke Ball, but Magnet Powder is nowhere to be found. I looked it up, but the Youtube videos all only show how to get the corrupted Poke Ball, and they already have the Magnet Powder. I found one post that said it is in the Mosswater Factory, but I am past the part where Reborn City was cleaned and renovated. The factory doesn't seem to exist anymore(unless I'm blind), so can I even get Magnet Powder anymore?

[Guest Relinquished]

Or in the factory where you fight the Pulse Muk. After breaking free, in the area with 1 guard and caged pokemon, you take a left turn and proceed to enter the area, which needs Flash. You can traverse it without Flash, however and in one of its three branching paths, there is a MagnetPowder conveniently lying down in the way!

[Starry Knight]

The factory where you first fight Fern, they turn it into a living quarters for the homeless in Peridot ward right across from the pokemart

Bottom left corner of 7th St as well