Hi Doctor, I'm Ali A 21 Year Old Male And

Hi doctor, I'm Ali a 21 year old male and have been having hairfall since the last 6 months, every time I stroke my hair I get about 3-5 strands of hair in my hand and my hair are more prone to falling when they are oily or while I'm washing my hair. Can you please help me with the problem and let me know what the cause might be. Thank you