Try weekly overnight coconut oil soaks to reduce your porosity since you have it to hand. The lauric acid is a smaller molecule than the oleic acid in olive oil so will penetrate better, it's also associated with increased elasticity and is more 'slippy' which can help with clumping.
Some companies advertise the pH (eg. Komaza Care, As I Am, Dermorganic are 4.5 to 5.5), some are listed on the Natural Haven blog, otherwise purchase some pH test strips. Note that oils don't have a pH only water based products. All conditioners should be slightly acidic but there is a lot of variation
THE NATURAL HAVEN: pH of Conditioners
THE NATURAL HAVEN: pH of Shampoo : The Ultimate List!
THE NATURAL HAVEN: pH of Leave In Conditioners and Styling Aids
Fatty alcohols are listed in the 'curl chemist' articles here on NC, the whole series is worth a read
Ingredients Commonly Found in Hair Care Products
2a-2c, medium texture, porous/ colour treated. Three years CG, growing out mechanical and chemical damage = breakage and very high porosity. Past armpit length heading for waist.
CO-wash: Inecto coconut
Treatments: Komaza Matani, coconut oil, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss ultimate volume, Inecto argan
Styler: Umberto Giannini jelly, Boots Essentials gel
Experimenting with: going back to basics