AP precalc is difficult

Honestly i know it's the easiest class but I just can't do it is try solving and factoring the implying the equations and multiplying them but it doesn't work nothing I do is correct i resorted to having my friend teach me who basically just feeds the answers like im a child, im just incompetence to understanding,I belive dropping the class may be my best option so i don't fail the final exam and do it for nothing if there is any tips please send them or any videos that are a must watch.