Re There Spirits In Sikism


i dont know what religion i am or to be honest i dont relly know what i believe but sikism is the only religion where from what ive reaserched i agree on but i dont really understand what happens after death if you were 'evil'.i know that you rencarnate into a lower form of life but i still believe in spirit that are on our eath but we can't see them but i think they are just the ones that arnt ready to rencrate as they are 'evil'and they found a loop hole of the recarnation cycle. i just want to know if sikhs believe in spirits. i cant get a specific answer from anywhere and i have been looking for a long time so please help me understand