You were outnumbered, unarmed, and cornered. Nobody can fault you for needing help in that moment. As for always needing him, That's not his call, he doesn't know you enough to know your capabilities. And as for never being a victim, while training and everything can help a lot, you can't prepare for every scenario, and stressing over it will only make you more paranoid, obsessive, or worse, recluse. But you should absolutely do whatever you need to do to make yourself feel safe.