What is the common practice for NLP or text mining for non-English?
Translation as a pre-processing step is usually sufficient for many tasks (e.g. sentiment classification), but naturally undesirable for other tasks e.g. grading someone in written Dutch fluency.
Hence, for these tasks, the objective is:

Be able to train a language model for your specific language
However, you want to be able to do this with minimal resources

Thus, people in research view this as few-shot learning. One of the most common approaches to this is to exploit meta-learning, i.e. use models that have been pre-trained using many tasks (languages in this case) and they have been trained so that only a few gradient steps and little data is required for them to be applicable to a new task (Dutch in your example). An example of one such model you could finetune (transfer learning) is called multiliingual BERT... this was back in 2019, so I expect since many other multilingual language models have emerged - these can be good initialisation points for any bespoke model you want to train for some new language...