My Japanese maple that bought 1 month ago needs help. It looked healthy when I bought it (picture with the brown bag attached). I repotted it in a terracotta pot with regular potting soil that I’ve used for all of my plants. Then everything went downhill from there; the leaves had a white powder appearance. Many dried up leaves started to appear on my floor. Eventually, all of the leaves had the white powdery appearance and every day they dropped…even the newer leaves shriveled up and died. The most recent pic is when there are no leaves. It’s an indoor plant but the soil showed some very tiny white bugs that will crawl everywhere once I add water (I think they’re springtails that came with the tree because my soil is brand new). This is my first tree so I’m inexperienced with the illness it might have.