How to adjust rear hub on Giant ATX 2? My back wheel on my Giant ATX 2 2019 is wobbly, so I am trying to adjust it. I saw many videos on how to do this. For example, but none of them feature the type of hub that I have. It seems like an axle and skewer in one part (see photos below)
My question is: how to adjust this particular type of hub? Also, what is this type of hub called?

this is how the wheel looks like without the axle:
You have a perfectly standard hub with a freewheel, the problem is that the axle is broken, so it has come out of the hub along with the skewer. It explains the wobbly feeling. Kudos for noticing that in the first place.
Any basic hub overhaul tutorial should suit, but you need to replace the axle first, as part of the process.