shaving... down there

hi, i’m maddie. i’m turning 14 on monday. i’ve been pretty hairy since i was like 9 or 10 and it never rlly bothered me until recently(i also live in aussie, at the beach so i’m constantly in bikinis). i’ve tried shaving and trimming downstairs but i must’ve done a pretty shitty job coz it was just itchy and i had razor burn and i couldn’t rlly maintain being “hair-free” so i gave up. does anyone have some advice on how to remove the hair and not feel like it burns and b super itchy for the next few days. thanks xx