The phrase "insecurity issues" refers to problems or concerns related to feeling unsure, doubtful, or uncertain about oneself, others, or a situation. Full definition
This woman obviously has insecurity issues judging by the quotes of her no longer feeling safe or loved. (religion.blogs.cnn.com)
Listening to that made me wonder if there is anyone who doesn't have insecurity issues about their body? (mojintouch.com)
Unless of course, the oppressive behaviour is too much and very possibly an indication that the other person could be dealing with insecurity issues. (uk.match.com)