18/M feels like friends use me for stuff

I am 18/M and i am going to college soon, which im excited to meet new people, my childhood friends have kind of changed. I am maturing, realizing at a lot of things about life. And im starting to realize a lot of things i dont like about my life, and things id like to change. For one, while in highschool i did quite a bit of drugs, weed, alcohol, psychs ect.. i have since stopped i rarely smoke weed, and i rarely drink. My friends invite me to parties but its not really my scene, just because i wanna stay clean and do more productive things with my time.. i always accept my friends and always give my time to them if they wanna hangout. For the past few months my house has always been the move. Which was fine, i enjoyed having people over and seeing friends, but what bothered me recently and really got me thinking.

I had two of my closest friends over, while i worked on my car outside. Both of them were inside with each other, while i was outside by myself. Idk why that just kind of hurt me. They were inside smoking. I dont judge for drugs or whatever, people do what they do and its not my place to control them. And i guess the argument i have always gave myself was " i would rather them be in my house safe, where they couldnt get caught, then out in the streets. I just feel bad, i dont have many friends, and its not that i am shy, its just i have a hard time with finding time for it all, and most people arent my type of person for the very reason bcuz all anyone wants to do is get fucked up or high, and im trying to move away from that stuff.

My friends never ask me how i am or take interest in my life, other than any girls ive fucked or like how work was, but thats high school stuff, like sex is sex you know? Like its cool but everyone has fucked someone by now, "she had a fat ass" "big titties" ect.. 😂😂😂 but never like how im dealing with shit emotionally or like how my college orientation went, like interesting stuff.

How do i let them know how i feel? because they are very oblivious as to how i feel about the whole thing.

How can i say no?(the question above is way more important than how to say no, id hate to lose the friendships i have, because ive known them all my life, and they know how to have a good time, and i know how to have a good time. I would like to still have them to smoke with occasionally or drink a bit. But it would mean a lot more if they would reciprocate interest in my life, as i take interest in theirs.

Td:lr my friends have changed on me, and use me for my house, not sure how to handle it.