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Why did my roller luggage's wheels stop turning smoothly?

Two weeks ago, my carry on worked perfectly. But last week the detachable wheels stopped rotating smoothly, when I tried to glide my carry on. The wheels budge *JUST A TAD* ***when you push them hard***, but **it should be EFFORT LESS**! Here are two pictures.
I see nothing jammed in the wheels. I ventilated wheels with my hairdryer. I hosed water into wheels. But nothing fell out. Wheels are still stiff! Why?
~~I bought this carry on for $350 USD. It is out of warranty. I can't afford buy new one.~~
[![enter image description here][1]][1]
[![enter image description here][2]][2]
~~[1]: https://i.stack.imgur.com/32spe.jpg~~
~~[2]: https://i.stack.imgur.com/osLsK.jpg~~

Two weeks ago, my carry on worked perfectly. But last week the detachable wheels stopped rotating smoothly, when I tried to glide my carry on. The wheels budge JUST A TAD when you push them hard, but it should be EFFORT LESS! Here are two pictures.
I see nothing jammed in the wheels. I ventilated wheels with my hairdryer. I hosed water into wheels. But nothing fell out. Why are the Wheels still stiff?
[![enter image description here][1]][1]
[![enter image description here][2]][2]
[1]: https://i.stack.imgur.com/32spem.jpg
[2]: https://i.stack.imgur.com/osLsKm.jpg

motion

motion friction