How to change taxonomy term ID to term name? I'm trying to change path of my site which is based on taxonomy tags. Default path of my site in this context is /taxonomy/term/120 (or other number - TID). 

In Drupal 7 option to change TID to term:name was easy using Contextual filter and Filter value type set to Term name coverted to Term ID (shown eg here: Views contextual filters taxonomy name).

The big problem I'm struggling with is that there is no Filter value type field (dropdown menu) in Drupal 8. This is picture of my screen:

So I cannot change TID to term name. 

Have anyone idea how I can exchange them. Is there another way to change them in Drupal 8?
You first have to create a relation with the taxonomy terms by adding the relationship with the taxonomy list or Taxonomy terms on node. Once you have added the relation, you can now add a contextual filter called name with the category Taxonomy term. This way you can pass the taxonomy term by name to the filter.