The driver's side door lock is not working well.
When you say "not working well", it sounds to me as though the actuator could be getting weak, since this door gets locked, and unlocked the most. I recommend having the lock actuator replaced, after it is checked. I recommend that you have a mechanic, such as one from YourMechanic, come by and run a diagnostic on your faulty door lock, then recommend the best path to repair.
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