beginner how can i say sikuli to go back to lne 1 ?

You either rap the whole stuff into another loop

while True: #endless
    hanf = exists(...)
    while hanf:

or you redesign your existing loop:

hanf = exists(...)
while hanf:
    click(...)
    hanf = exists(...)
    # many other statements
    hanf = exists(...) # as last statement in the loop

More ideas on looping: faq 1437

You either rap the whole stuff into another loop

while True: #endless
    hanf = exists(...)
    while hanf:

or you redesign your existing loop:

hanf = exists(...)
while hanf:
    click(...)
    hanf = exists(...)
    # many other statements
    hanf = exists(...) # as last statement in the loop

More ideas on looping: faq 1437

Oh thanks a lot man :D

Make a function and make it call itself recursively?

Just make sure to add a flag to exit the loop when you are done, or that "hanf" will eventually not exist.

def hanf():
    hanf = exists(...)

    while hanf:
        click(...)
        hanf = exists(...)
        type(Key.ENTER)
        los = exists(...)
        if los :
            click(Pattern(...)
            boden = exists(....)
            if boden :
                click( ....)
            wait(...)
            ((text))
            click("KRDTHLETT-1.png")
 hanf()

@Deses
this does not do the requested job and is not a recursion.
On top, you have a name overlay with hand.

A recursive version would be:

def fHanf():
    hanf = exists(...)
    while hanf:
        click(...)
        hanf = exists(...)
        type(Key.ENTER)
        los = exists(...)
        if los :
            click(Pattern(...)
            boden = exists(....)
            if boden :
                click( ....)
            wait(...)
            ((text))
            click("KRDTHLETT-1.png")
        fHanf() # here the recursion happens
    # hanf() will exit, when hand does not exist any longer

 fHanf()

But I do not recommend to use recursion for these cases (risk of stack memory overflow).
I simple correctly setup while loop does the job very well.

Damn, the indentation got wrong there. But otherwise you are right, it's tricky to do if you don't are sure of what you are doing.