Shampoo recommendations for fine, dry, wavy, and thinning hair?

Hello! I am 20(f) and I am currently on the hunt for the best shampoo and conditioner for my hair. I have an extremely dry and itchy scalp, it flakes like crazy. I also shed like crazy as well to the point where it honestly gives me anxiety every time I shower because of all the hair that comes out. I’ve noticed my hair also thinning! I have fine hair, but a big head (lol) so to regular people it looks and feels thick, but that’s just because I have a lot of it. I’ve noticed thinning mostly around my hairline, it gives me so much anxiety to the point where I always have my hair down because I am too scared to put it up.

Please if anybody has my hair type and has experienced this. PLEASE! Tell me what you did and if it worked for you! Thank you!