Certified GKH Gardening Expert
You can bring your potted gerbera daisies inside. Here's an article on how to care for them: https://www.gardeningknowhow.com/ornamental/flowers/gerbera-daisy/gerbera-daisies-indoors.htm
I've not heard of them self-propagating, although it's possible they do in some areas. Normally, the seeds must be collected from the plant and started within a couple months to be viable, and the new plants may not be true to type. You may have better luck dividing the plant or rooting some cuttings. You are in Zone 8a, and Gerberas are considered perennials there, meaning they should come up again each spring.