1) He lost all his savings over foolishness of investing in a scam.

2) Their friendship fell apart over foolishness and petty arguments.

3) The business went bankrupt over foolishness in management decisions.

4) I can't believe you got yourself into trouble over foolishness again.

5) Their relationship ended over foolishness and misunderstandings.

6) The company suffered huge losses over foolishness in product development.

7) We had a huge fight over foolishness and silly misunderstandings.

8) His reputation was ruined over foolishness and reckless behavior.

9) The project failed over foolishness in planning and execution.

10) She regretted losing her dream job over foolishness and irresponsible behavior.