I've tried just finger detangling and it's just not enough for me. I use a wide tooth comb after applying my leave in. Gives me good distribution and detangles better. I just make sure it's still very wet and scrunch well after to encourage the curl pattern.

Have you tried a protein treatment?
2c/3a
Low-high porosity, fine/medium, high density thick hair, highlighted
Modified CG since 12/2013