Sex positions?

So me and my SO have been together for over a year now and I still haven't found a sex position that really gets me to my climax or I can't ever really get off when we do have sex. Does anyone know a position that is a sure thing to get me going every time?? The only extra thing that will get me going even without sex itself is when he bites my neck but we can't always do that because my job I can't have marks on me 😳😧any tips would be greatly appreciated