erklärt mir was in den köpfen von eltern vor geht die kinder in die welt setzen, sich aber dann nicht für sie interessieren?

The problem should be complex.

You will rarely get children with the intention to leave them to the left.

Much more it will be that one has imagined parenting differently or has changed somewhat with time – more stress in the profession, less love in the relationship, other worries – that leads to less and less energy for parents.

To this end, without the children being guilty, problems of the children themselves can also come, which override the parents. School stress, stress with friends, child makes at home things (not) that irritate parents, there are situations where the child and the parents are unhappy because it doesn’t run as they imagine.