Stepping outside of your comfort zone doesn't just mean finding new activities, it means shifting your perspective about the women you are already meeting. That woman that isn't physically attractive to you at first glance? Why not talk to her?
When it comes to dating, if all you do is look for your "type", that woman who outwardly ticks all the boxes for what you think an SO should be, then yes, you are playing to your comfort zone & making the same error repeatedly.
I don't think you need new activities, I think you should just start talking to those women you normally overlook. And then prepare to have your mind blown bc that's the person who's going to shock you & rock your world bc she is so unusual, so not what you thought, so unique that you can't believe you never took the time to look for her.