IS DRINKING AND SMOKING COMMON IN COLLEGES ?

im in first year(18 years old ;yeah too young) and nearly all my friends in college have started drinking and even some girls also drink . the environment in boys hostel is like its completely normal to drink and smoking , i hate the smell of cigarette, some of them even tell they have been drinking from before. all my classmates are almost 2-3year older than me they never force me to drink but tease me in a funny way ur a kid, ur not even 20.

the irony is that before joining the college my mother literally told me never to drink or smoke, and not become friend with those who do that.