Any recommendations for damaged hair 😅

I have very severe damaged hair mostly when it comes to the end and the middle of my hair. I’m trying to make my hair healthy again by starting a curly routine with the brand Innersense. Also one thing that bothers me is that when I wet my had my roots tend to get very puffy while the rest of my has gets curly but when they dry they tend to get frizzy and quickly lose form. Hopefully this brand will work to restore my curls back, and I believe I have 3B curls. Any recommendations on how to style my curls and make them last would be soooo helpful. 🥹