Reading these posts, it seems obvious that the local Lidl or Aldi is just as good or as bad as their manager and his team. Politeness, being helpful, cleaning and tidying the store, selecting which stock to order and rotating it, all come from the top down, just as they do in any other store. The physical building and the lighting, parking and so on may be dictated by head office, but the details of day-to-day organisation are up to the manager. If your local example doesn't come up to your standards, then write or email the manager and head office with your concerns.
For the record, my Lidl is bright, clean, cheerful and packed with bargains, the carpark is large and there is a bus-stop close by. Some of their stock is not to my taste, but most of it is. The fruit and veg are fresh and well displayed, some in packs, some loose.