"I don't know" stops the talk right there. Nothing good comes next. It sounds honest. It isn't. It really means, "just tell/ask me more." It asks someone else to do the work. Say this instead: "I'm not sure, but maybe—" That's not weak. That's infact brave. It keeps you in the talk. Proactively. We grew up scared to guess wrong. So we stopped guessing out loud when we don't know. Or We want to be just lazy to engage. So say what you can. Engage when you don't know. See where it goes. No one needs you right. They need you trying. Engaging!
Whatever pattern is repeating in your life has one common variable: you. The people change, the places change. The pattern stays exactly the same. You call it bad luck once, coincidence twice. By the third time, it stops being either. It's easier to hold the other person responsible than to hold yourself accountable. But the situation room only ever responds to what you carry into it. This isn't about blame. Blame keeps you looking outward. There, you'll seldom find the answer you seek. It's about ownership. And ownership is quieter, harder to attain. Change the one constant, and the pattern runs out of reasons to repeat itself. Because it was never the room. It was always you!