Guten Tag, ich werde auf English schreiben weil mein Deutsch nicht so gut ist.

In three changesets (this one + 138596984 + 138596780) you have added the locations of former railway tracks.

The common consensus is to not add no longer verifiable items to OpenStreetMap (as these railway tracks have been removed decades ago and in most cases, there are no traces left anymore).
Secondly, even if there were traces that would justify abandoned railways, these traces usually do not have a gauge anymore (so this tag would have to be abandoned:gauge to make sense), unless i.e. sleepers are still present that contain gauge-indicating marks. 

Could you please indicate how the former tracks are still recognizable as fulfilling the conditions of railway=abandoned? In nearly all cases (the big exception being the Handelsweg, there you - indeed - even have some disused tracks, and possibly the way between parking "Oude stad" and the former yard) there is no trace of a former railway, using the sources that you used as well as my local knowledge. In case of abandoned, I would at least expect something like ballast or the sleepers, or as a bare minimum a path in the ground that wouldn't have existed without a train rail or for example a strange path between trees that cannot be logically explained otherwise. 