How to get best beachy curls?

i have stick straight hair.

the bottom half is way over processed, very damaged and dry with the ends being very bad split and broken ends



i have tried to do the curls using rollers and i get this horrible kinky poodle look

i cant seam to get the hang of curling iorn on my sel but i cand use it on others and look pretty



i have a chi nano flat iron (the baby blue one)

and have wayched several youtube videos on how to curl with flat iron i can get some parts to curl but not others and the ends are hard to pull through the iron i guess cause its so damaged



and when i finally did getit right they fell out just hour or two later



i didnt have any product in before i stared and i was using kenra thermal styler spray and sprayed all oner with aquage hair spray when i was done



please tell me products to usse to get it right and to stay



i have an all day court trial coming up soon and need it to stay all day



i can email you picture of last time i did it and what it looked like right when i was done just email me you email addressHow to get best beachy curls?
You need to get your hair trimmed. It will be 100 times better to curl... I'm serious. There is no hope if it is so damaged.