ok so i just started a new game+ due to i stopped playing after i got stuck before i beat the game a few years back so i forgot everything about the story my qustion is im at lvl 38 but all the enemys are like the start up lvl when u first start the game is there a way to make them stronger so you get more exp?

Nope, but if you keep playing eventually you'll blow through the early parts and get to an area like the Black Omen where it has good exp.