Normal
The pics you posted of the back rim tell me zero. the other side of the wheel would only give me a better hint of what shape the spokes are in. if you have broken ones then you may benefit from replacing them all. if they are not broken, as in broken in two, I wonder what you think new spokes will do to straighten your wheel? IE in other words, a spoke that can be loosened or tightened will work for the intended purpose of truing and holding the rim true.You may have to remove some spokes and measure them to make sure you are getting ones which will work. Pictures dont tell the full story and bad pictures don't even tell that much.
The pics you posted of the back rim tell me zero. the other side of the wheel would only give me a better hint of what shape the spokes are in. if you have broken ones then you may benefit from replacing them all. if they are not broken, as in broken in two, I wonder what you think new spokes will do to straighten your wheel? IE in other words, a spoke that can be loosened or tightened will work for the intended purpose of truing and holding the rim true.
You may have to remove some spokes and measure them to make sure you are getting ones which will work. Pictures dont tell the full story and bad pictures don't even tell that much.