So I'm Having Hair Issues... Please help! What should I do?

I straighten my hair all the time which is why it is damaged. Now, I want to stop straightening it but it gets really frizzy when it dries after washing. What should I do. I've tried olive oil, I've tried Mixed Chicks Leave in Conditioner, and I've tried a combination of both. My hair looks great when it's wet but frizzes when it dries. Can someone offer advice or recommend some products that are under $30. I am African American and have 3b/3c hair if that helps. I was thinking that I would ask a hair care professional at a salon but I tried that before and she just tried to push her salon's products on me. Should I try again? IDK WHAT TO DO!!!!!