Light fixture doesn't work.

[DynoFR1611514]

I decided to replace the two regular light fixtures with new the dimmable ones. I removed the old ones and installed the new ones in place. For some reason, the fixture didn't work. Both of them are operational when they are not connected the light connection box. Then I decided to get a dimmable switch for both of them. I removed the old- regular switch and installed the new dimmable one. And, again, it didn't work. I tested the dimmable switch with regular light bulb connections separately, outside the box connections, and my wiring was right. I don't know what the problem is. Both light switches have two separate wiring/switch connections.
I attached two photos. Any advice on how to connect the cables?

 

[PEG]

Hi,what testing gear/experience have you got?