Ok, I'm a 20 year old and on average, I think about sex 3/4 times a day (which could increase depending on if there's a guy I fancy) and maturbate every day (unless i'm really stressed/busy). It was alot worse when I was in my teens, on days where there wasn't much to do i'd masturbate 3/4 times lol (would do more if it wasn't physically draining, sorry tmi)
I feel like if I was a guy this would be more normal. I'm not sure if most girls are like this and keep it private (like I do) or my sex drive is just high because none of my friends ever talk about this kind of stuff.