How do I improve my social skills?

I am 17M and I have zero social skills like I have 0 friends but I am trying to improve it but I don't know it's feels wierd even if I talk to classmate trying to make some friend they will have another friends from other class and talk with them and Go around during break period and here I have to be all alone walking around and I have to see other people and classmates laughing talking with each other and whenever there are events I just don't go to school cause I don't have friends and feels wierd. It just sucks to be all alone no friends no social life 😮‍💨. I hope I make some friends and it feels wierd to be all alone.