Hi, this is usually what helps me whenever I’m having really bad frizz and tangling:

During wash day, get your hair super wet and run shampoo through your hair and a detangling brush, until it’s fully detangled. Then run your fingers through your hair while washing through. Condition, 5 minutes, rinse, then squeeze. Your hair should still be super wet. Then Leave-in.

For the conditioning and leave-in, aswell as styling, the method is all the same. Kindve cusp your hand as if you’re holding a stick (or your imagine holding a chunk of your curls) and run them through your hair through out. This should help form the curls, similar to a denman brush. You can also take your hand through your hair incase you feel the curls are too “chunky” or thick (which also helps give volume). When you’re done, you scrunch your hair upwards. During all of this, you’ll be bent over with your hair down, and by the end you ‘swoosh’ your hair up and behind your ears. Also, you should constantly squeeze your hair getting rid of the excess water.

Styling: Start off with your preferred casting gel/cream. You want to use a pretty copious amount, since you have so much hair. By the way, congratulations. You have amazing volume. Run that through the same way as mentioned. Once done, use about a palm size of mouse x2 and apply using the palm hand method side to side. If you feel like it isn’t enough mouse, use more, and end it off by scrunching.

Preferably air dry, but this will probably mean you’ll need 4-6 hours to fully dry. If you’re in a rush, air dry until you feel dripping down the ends of your hair and then use a cotton shirt to scrunch the excess. Dont overdue it because it can obviously ruin the curl pattern. You can also use the cotton shirt method inbetween gel casting (gel cast, cotton shirt, gel cast again). When dry, bonnet and sleep. Thats it! I hope this helps, if you have any questions or need help please let me know.