It looks very plausible that stretching before you exercise doesn’t do much for you. Multiple older surveys suggested this.
Annoyingly, the studies linked in the previous paragraph are 2 decades old, and somehow I can’t find a large, well controlled, trial.
Many sports coaches have said to me that stretching cold muscles worsens your performance and that you should stretch AFTER the exercise to aid recovery
Dynamic stretching before exercise and static after (plus before bed).