Student or Learner
I had a small tragedy last night.
Is this sentence OK?
In my opinion, "small" is an unusual collocation with "tragedy". Tragedies are usually pretty serious.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
"Small tragedy" would have to be a pretty lighthearted statement. Like a slight catastrophe.
Although when my hamster died, I guess it was a small (furry) tragedy.