Q.saving firecracker grass
Is there any way that I can save my firecracker grass to come back next year without actually digging it up and taking it inside during winter? I have 5 of these in my small garden and would like to keep them there for next year and more if possible. Any suggestions will be appreciated. Thank you

It looks like the plant hardiness zone of firecracker grass is 9-11. Central alabama is probably around an 8 (https://www.gardeningknowhow.com/planting-zones/alabama-planting-zones.htm). You could try mulching it heavily to protect the root system and lock in moisture but the only way to ensure it's continuity is to bring it indoors.
For more information on over-wintering fountain grasses, please visit the following link:
https://www.gardeningknowhow.com/ornamental/foliage/purple-fountain-grass/over-wintering-fountain-grass.htm