lack for (something)
To lack something one or something wants or requires, or would benefit from. You don't need to get me anything for my birthday, Mom—I really lack for nothing. The only thing he lacks for is the motivation to put his skills to goof use.
lack for something
to lack something. We don't lack for new ideas. We lack for nothing, thank you.
To be in need of something or someone. Used chiefly in the negative: She is very popular and does not lack for friends. Because he's rich, he doesn't lack for luxuries.