How to make Translations more attention?

Hi,all
I've been focusing on crowdin. I found a very strange problem, although Gitlab translation language is many, but there are many languages of translation completion is very low, even zero. These very low-completion languages are very bad when used.

I18N is important. Everyone likes their mother tongue, it is very kind. Although English is an international language, we prefer the mother tongue, it does not need to think more.

Is there any good way to entice people to join Gitlab translation team? It's something I've been thinking about lately.

Open recruitment? Gitlab team lead? Or a better way, please let us know.