creepers and piglens

plz i have been trying to get to the end but i need diamonds and when i last played i found some but then got exploded into lava and died and earlier that day i got to the nether and when i was wondering around i got destroyed by a piglin because he had a fire aspect gold sword and so plz help by nerfing the creeper and make the piglin sounds more louder because i did not here the one that killed me in the game