307 rear door handle

Friends my 307 rear doors are opening especially hard behind the driver. I said it is because AZ is used, but this makes me uncomfortable. what can i do please help ??

Let's take care to open the topics to the relevant departments, you have opened all the topics to the heading of organizations.

After opening the door, the parts that hold the door can be lubricated, I think the same is also true, but it is not a problem.