Hi i am 13 years old n whenever i go my hands throw my hair each tym 2 to 4 strands fall off

My diet is not dat gud bt i use oil n home remedies n whenever i am applying any home remedi or oil my hair lose some strands is it ( i straight my hair once a week is it ok to do so? ) normal or should i work on my diet m really worried coz my mom hd nice hair bt aftr sum chemical process she strtd losing hair n even my sister hs hair fall so m worried plz help

Me n Rply !