Help! My roots are dry, matted, and tangled

My 4c/4b hair is suddenly extremely dry. At first, my hair was just dry and matted at the roots, but now my entire head is giving me a hard time. I cannot get my fingers through my scalp; the roots of my hair is stuck together, dry, and matted. My hair isn't holding any style and it looks extremely dry and unhealthy. I do the LCO method and twist my hair up every night, but this is no longer working. My hair is 100% unmanageable right now. I haven't switched up on my products, so im really about to give up. My hair was doing fine!

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