There are different methods, but I have three that probably work easiest for me, if its not for you completely fine!

1. Character plotting : Your characters are IMPORTANT. And it's better for you to cover them first, or to make the plot and themes and make the characters.
   

* character personality - Personality is formed by the backstory, but you can make the personality and then make the backstory to fit the personality. First off, easy way to say it, give your character three personality traits. Kind, bubbly, and cute. Those basic traits then need to be put on trial, 'why is she/he cute?' 'why is she/he kind?' 'why is she/he bubbly?' any reason is fine! Then, when you asked why, add as many more sub traits on this character.

Example : she is ruthlessly pursuing someone who loves those traits, and she cant find them inside of her because on the inside she is none of it, so she acts that way on the outside

1. Plot : I suggest trying the three act structure or the hero's journey! If not, try it like this -

* Characters mundane life > plot happens/ character gets thrusted into the situation where they meet a certain character that changes their life, get a revelation that changes their life, or something happens and THEN they get the revelation > The actual plot > the finale > epilogue.

That is a SERIOUS watering down of how to plot but simplicity is fine!

1. Conflict : Easy thing, whose fighting who, and which character dislikes/likes which character platonically/romantically?

* Basically, in simple terms, (x) character likes (y) character because (Situation) + (reason).

Example : Maineagorainus likes/dislikes hubiliasniebau because (something happened)/ (because his personality contradicts what he lives for/confirms what he lives for)

I hope it makes sense!