If your hair didnt like the coconut oil, it probably needs moisture instead of protein.
One of the keys to healthier hair is a proper protein to moisture balance. For moisture and softness, stick to conditioners that have fatty alcohols like cetyl, stearyl, and cetearyl, plus emollient butters and oils, humectants like glycerin and aloe vera, and ceramides.
Avoid protein ingredients like hydrolyzed proteins, amino acids, keratin, and henna.
The best thing you can do is look at the ingredients list of several and decide for yourself.
You could use a ready made product like the Shea Moisture deep treatment mask, or you could add something like sweet almond oil/ macadamia/ argan oil (make sure it's 100% pure, there are lots of fake mixes) or even good old extra virgin olive oil to your own conditioner and warm it gently for extra effect, and leave it on for half an hour. I do that with sweet almond oil because my hair is lacking moisture too.