How do I get my hair to look decent?

I have naturally curly hair, like shirley temple ringlet curly. I have been colouring and straightening my hair for years now and obviously that has really damaged my hair, so it doesn't go nice and curly anymore it's more of a mixture between some curl and frizz. I have so many hair products so I'm not looking to buy anything new. Does anyone have any suggestions of what I can do to make my hair look decent without having to straighten it all the time because having to stand around for half an hour straightening my hair has gotten ridiculously monotonous.