It's a pity that only robots are left for this stock？？？

I came from the AUR comment section. Over the past three consecutive days of observation, I discovered a surprising reality. A few days ago, I bought 2,000 shares at 6.55. For instance, when I tried to sell at 6.83 before the market opened, in an instant, the sell order originally at 6.89 immediately dropped to 6.80. When I placed a sell order at 6.75, it instantly became 6.74. It seems that the robot is always monitoring the real-time buy and sell orders. When I split it into several parts, the robot operated simultaneously. This piqued my interest. I observed for three consecutive days and found that the robot was constantly placing and canceling orders. During some periods without transactions, the robot spared no effort to make the bidding orders seem intense, but in fact, there were no actual transactions. Isn't this really amazing? Sometimes I see similar situations in Nvidia or other stocks, but the proportion of robots is not as large as this. It took me two hours to figure out that it wasn't a bug in my software. Can anyone tell me what's going on? How does such a robot operate? It can quickly raise or lower the stock price with one or two shares or a dozen shares. It makes me wonder if there are really real investors trading?