I need a word for things not going your way
You can probably call them mishaps:
- an unpredictable outcome that is unfortunate.
The Free Dictionary
If you are okay with being slightly crude, try:
Some days you're the dog, other days you're the hydrant.
This idiom follows from the fact that dogs very stereotypically urinate upon fire hydrants while out for a walk, supposedly as a way of marking territory. When you are the dog, you are the one doing the marking, you are in charge, on top of the world. When you are the hydrant, well, you are the one getting marked.