Futures is a mess

So I've been using futures for a while now and I've noticed that after placing orders and them getting bought they suddenly switch to a different leverage on its own or with less then given price.

I've had 2 orders where I had the biggest leverage for the smallest order. Guess what happened? The order switched at the same price. How the hell is this possible? Now my biggest order has the biggest leverage.

Why is the futures not listening to my commands and just switching orders or adjusting leverage/price on its own? My friend also encountered the same issue. I'm really confused as to what's happening.