K18 leave-in conditioner??

I’ll start by explaining what hair I have. It is long and fine hair, It gets colored with bleach but only highlights/bolyage. I take incredibly long showers so it is quite brittle and has quite a few split ends. The top of my head is low porosity and gets oily easily however the ends of my hair have a high porosity and are dry and damaged. My hair is also quite frizzy.

I’ve perfected every step of my new hair care routine to hopefully grow new healthy hairs and the only thing I’m struggling with is a leave in conditioner. Because of the state of my hair I believe it is best if I apply leave in every night and I’m looking for one that is good for my hair. I’ve heard so many good things about k18 leave in and the ingredients all look very good. However there are so many and I’ve heard that it’s for curly hair. It’s also a cream and there are many different ones. So I guess the advice I’m looking for would be: Is k18 leave in the best for my hair? If not is there another one people would recommend? If it is the best sounding which one specifically would be recommended and even though most are cream can it be used daily? I would really appreciate the help!