Don't get the option to receive lockpicks from fritz and more (solved)

Hi there,
When I try to collect the money from Kunesch, I always fail with the persuasion option, so he strikes me down, and i go to mother to have myself bandaged. Afterwards, there is no option to ask the friends to help me with kunesch if i help them soiling the german’s house, neither do i get the option to receive lockpicks from fritz.
in a youtube video i saw that this only happens if i can use my talking skills with kunesch.
how can i achieve this? where can i skill my talking options in the beginning of the game?
Thanks,
Sandra
(SOLVED) I could raise my talking skills with mother and father