Confirmation slower than other people that put less gas


I trade on Perp with a lot of gas (5800 Gwei, around 5$ for each trade).

Saddly I realise that people that put much less gas than me have their transaction confirmed before me.

I send an order at 9am57, and the order has beed confirmed only at 9am59 :

During those 2 minutes, 10 orders have been confirmed for other traders, all with less gas than me.

this one for example :

Could you please explain me how is it possible please ?

Thanks a lot !!