Review Detail of Higgs in Reincarnated as the Demon King's Son

Sorry but I dont like the story. It so stupid its hard to not cringe everytime I read. He was born a son of super OP parents so he should have been able to level up easily. It was even mentioned that he visited so many galaxies and even went back in time so I was assuming that he had leveled up so fast because of those travels but no. You can even add the fact that he has a system and unlimited mana. I cant imagine how trash can an MC be to not get strong fast with those perks. The infinite mana alone could've made him an OP one in just a few chapters even if he was born as a commoner yet he was a child of 2 of the most powerful beings yet he was still trash? Oh come on, really?