Hi, thanks for updating the trolley wires in Bratislava.
However, you have done some mistakes here.

If there is already the tag trolley_wire=yes on both-ways road, adding trolley_wire:backward=yes or :forward does not add anything, as both ways are already tagged. On some roads you ment the wires are only in one direction, in that case you should have removed the bidirectional trolley_wire=yes tag after adding :backward or :forward variant.

Why is there no trolley wire at https://www.openstreetmap.org/way/203390144 ? How would the trolleybus reverse to the next stop (on the opposite side of the road) ? The trolley wire exists there.