I struggle to execute any techniques at all in a real roll

Hello,

Thanks for giving me your time and advice.

I train bjj for a year and half now but I still seem not to be able to execute any techniques during the rolls. I can do them easily at the drills, tough. I get my ass beaten by guys who train for 1 month. I'm prolly the weakest in the gym.. So giving up is not a real option to me. I must become better.

So I'm writing here with hope that someone could tell me how to improve. Has anyone had this problem?

Thank you again guys.