Give me suggestions!!

I’m looking for the most elegant, salon smelling, repairing (years of dye) and smoothing haircare. Send help!!! I’m thinking of getting the entire olaplex line…

It’s crunchy, it’s sad, it’s frizzy, it’s shedding, and I don’t want to give up. It’s finally gotten to the point where it reaches my bum (5+ years of growing it out) and I want to really put love into keeping it happy. I’m not even sure what my hair type is, honestly. It seems straight but dries kinda kinky. It won’t hold a heat curl but will straighten, it holds waves from a braid if I braid it while damp. Major split ends and breakage too.

Any advice welcome, I’ll take anything I can get.