Most feedback isn't feedback. It's us venting our own frustration and calling it that.
Telling someone what they did wrong is easy. It doesn't take much thought, and it doesn't require you to actually solve anything. Telling them what to do differently is harder. It takes more effort, but it's the only version that actually helps them improve.
Before you give feedback, ask yourself: am I trying to help this person get better, or am I just trying to feel better?