Prius 2010 gas motor hesitate to kicks in

i have Prius 2010 gen 3 my gas motor hesitate to kicks in after i push the gas puddle and it`s make a loud sound like i`m racing in it but with no much power?

and if i start the car after full night rest the electric motor starts then the gas motor starts normally , but the gas won`t stop it`s keeps running with low sound like it`s goinig to shut off and just keeps running with little power from it and with loud sound if i push the puddle ??
please i need help