508 staples and transmission problems

I have been using my car peugeot 508 e-hdi 2013 model semi-automatic gear at 112,000 km and generally in good condition for about 5 years without any problems and I am very satisfied. In a few months, various problems have started to occur in my vehicle.

1) While my car is running, I am stationing once a week, sometimes once every 2 weeks.

2) Once a month, the average vehicle passes by 10 km on the road, then I run it again and continue on the road

3) this is the most frequent problem that happens whenever I use the vehicle at least once ... when I pass through the bumps or go anywhere with the vehicle in any unfavorable place, it seems as if the clutch comes off and a few times the car will be stationed, but then the gear changes again. I can sit and go on the road. On the roads with smooth asphalt, this problem occurs only on rough roads on rough roads.

what do you think these problems might be from?

Thanks