1. search for e.g. french (https://quizlet.com/subject/french-basic-vocabulary/)
2. look for the list(s) with the most words
3. check quality (if you can :)
4. copy them to your language directory
5. repeat
if you speak German, the addition of "Langenscheidt" could help...
Example (contains about 6000 words): https://quizlet.com/ThomasBisig/folders/franzosisch-wortscha...