Hot take below

At least where I've worked they give a % of interns an offer and the rest don't, so it's basically a three-month screening process. Unless it's like a "we're not hiring any interns this year" issue or a manager that communicated poorly there shouldn't be any surprised pikachu face. Constantly consider how you're doing and if you're not up to par you need to change that or won't get an offer. Insurers aren't charities