How do i get amazing soft curls done with hot rollers to stay for hours?

okay so i just bought these conair hot rollers. they are pink and i love them although the clips are awful. so im going to buy those good white clips that look kinda like a comb. I straighten my hair everyday so its pretty straight but it can curl because it can hold curling iron curls. I did them this morning with the rollers and it looked perfect! but around an hour later they already began to fall out. i unwound them, hairsprayed them, brushed them, and then hairsprayed again.

1. is there something im doing wrong?

2. suggestions of any products?

3. any tips or tricks to make my curls stay for HOURS looking amazing??!How do i get amazing soft curls done with hot rollers to stay for hours?
The best way to get your hairstyle to last all day is to wash hair

the night before (not in the morning before you go), because hair that is just washed does not hold curls for a long time. Hair that has been washed 12 hours ago looks wonderful and is easier to style than newly washed hair. Almost all beauty contestants use this trick, they never wash and style their hair the same day.

And when you wash it, condition it first and then shampoo it second.

This will give hair more body and will make it stay in the style longer.

Lastly, use a good hair spray (not one with alcohol in it...because it can damage/burn your hair) or use a little serum when you hot roll your hair. It will make your hair look amazing.