unsophisticated

unsophisticated /ˌʌnsəˈfɪstəˌkeɪtəd/ adjective
unsophisticated
/ˌʌnsəˈfɪstəˌkeɪtəd/
adjective
Britannica Dictionary definition of UNSOPHISTICATED
[more unsophisticated; most unsophisticated]
: not sophisticated: such as
a  : not having or showing a lot of experience and knowledge about the world and about culture, art, literature, etc.
b  : not highly developed or complex