The mistakes cluster where the time is low — sound positions collapse under self-inflicted pressure.
You spent the clock and then blundered under pressure — the clock beat you, not your opponent. Time is a resource to spend where it matters: pour it into the few sharp, critical decisions, and play the obvious developing and recapturing moves quickly. A good move made now beats a perfect one you never reach. Budget so the hardest choices still have minutes behind them.
The good news: it is a pattern, not bad luck — and patterns can be trained. Step one is measuring yours: how often it appears in your real games and how many rating points it drains. Then the daily repair: 5 minutes on your own positions, not invented puzzles.