u need go to map suitable for that lvl, as i know u just need to find it from mobs drop. Maybe in resource mine map or atlus gorge
Hope can help u

or ask someone to help you go into the newbie dungeons. I believe LN starts at lvl 25 which drop those. Since christmas dailies are for those dungeons, just mega~

You can PM me ingame if Im on XD ill be happy to take you LOL

Usually we just obtain them through mobs while questing, if your not having any luck perhaps try Laioha Easy? should be available for level 25+

dang a minute slow ._.