I am making my own alcohol and i need advice

it’s nothing to fancy. it’s this recipe that i’ve learned from like 3 different people.

so what I would do is buy a bottle of cranberry juice, yeast, and sugar. and i pour a cup of sugar into the bottle, then a packet of yeast, mix it a bit, then let sit for 2-3 weeks

is this enough? is there any other steps i should be taking? i’ve tested a cup last Friday and it got me pretty buzzed fast.
if you do have any helping advice or tips that i can do to make it better please lmk!