i want to know how to root samsung sm-j106h

Rooting your device might not be the best option for you, as it sounds like your device is having an internal problem
You might want to buy another battery for your device as that could be causing your issues.

While for rooting, you can use KingoRoot for Android (I don't endorse rooting).

i have several phones
i am a store owner i have asked for several store the have the same problem maybe it is becuase the rooting i need to root the device i know how but i tyhink it is not a good rooting if you are an expertt i will be happy to be in contact with you for more things

You have to unroot your device and then again root by using different tool.
if you don't know about other tools then i will provide you a link where you can download other rooting tools.
Best Apps For Root Android Without PC

freind to work told me that it will be fix if i will flash full packige version

"a problem in the battery after 40 percent it drops down to zero" is a symptom of a bad battery and you need to replace the battery.

hi there i have a samsung sm-j106h and i can not root it well i have done the root but some of them have a problem in the battery after 40 percent it drop down to sero  pls advice me Games Under 10 Mb for Andriod

Your problem is not related to rooting. You need your phone to be serviced or replaced.

You can root your samsung device without PC. Use kingroot apk for rooting. If it isn't working then you can try other one click rooting apps for Android.