Vent/ reaching out

Just been praying alot lately about different things and trying not to lose faith... my prayers havent been answered so i start to ask God why? I know the lord wont let me down, im just real impatient... i just dont know why when i pray to god and ask please dont let this happen, it happens anyway... i guess in time ill figure out why and it'll all make sense in the end but right now i dont understand it.