Well trimming the ends is always helpful. I know you don't want to hear that but even a light trim makes the world of difference. Other than that using a good rinse out conditioner in the shower after a moisturizing shampoo as well as a leave in conditioner and serum will really make a difference. Also make sure only to brush the hair when its fully dried. While the hair is wet or damp only use a wide tooth cod. Brushing wet hair can cause massive breakage resulting in split and tangled ends.

After you apply your conditioner in the shower, comb through your hair. Rinse then towel dry then add a nice leave in conditioner.

Use a good conditioner. Go to a salon in your area & ask them to recommend one for your specific hair type. I would also rinse your hair with cooler water & work an anti-frizz serum into it. This will loosen up the tangles. You can also ask your hairdresser to do some undercutting; to reduce the heaviness in your hair.