I recently purchased an iMovR Energize corner standing desk which came with the Freedom base. It works well, but had a bit of a wobble when placed on the relatively-thick carpet in my office. Because the leveling legs are relatively wide (35mm) they’d sit on top of the carpet and the desk didn’t have great support.
To solve this I picked up four M8-1.25 x 25mm hex head screws from Home Depot and fitted them in place of the leveling feet. This resulted in ~20mm tall, narrow feet sticking down off the legs, pressing firmly through the carpet to the wood floor below, and no more wobble.
This is the same principle as carpet spikes, used to for speakers and other tall/narrow cabinets, to make them more stable on soft carpet by pressing through the carpet to the hard floor below. (Carpet spikes, for speakers, have all sorts of other acoustic isolating purposes which sometimes border on audiophile woo, but increased physical stability is an easily demonstrated effect.)