My new novel is like My Hero Academia but on crack, but there’s a specific conflict that hinders the MC from making his own decisions completely—and it’s hard to relate that specific conflict with the other minor conflicts like there are two stories at the same time. It’s tempting to write each character’s life to make it long, but for now, I’m trying to hook the readers with a big start. And because of the big start, the pacing kinda went a bit too fast. I’m constantly trying to find conflicts instead of making the characters find conflicts for me…if that makes sense.
Ok.
Then you might benefit from taking some time to worldbuild a bit. Conflicts irl are rarely solved clean and neatly in one sweep. Even if you've taken care of the danger/issue right away, there will still be aftereffects to deal with. Like say....lemme make something up:
Say your MC is a superhero in a superhero school but he's never been able to use his powers fully because of a childhood trauma that repressed his instincts. So he goes to superhero school to try and fix that, making friends and enemies along the way. The friends support him despite his "weak" powers, while the enemies look down on him, etc. Then in a plot twist, the MC discovers one of his new friends is actually the son of the villain who caused his childhood trauma in the first place. The villain might recognize MC too and decides he needs to die so as to not leave any witnesses.
So one way to resolve this conflict is to have MC kill the villain in their final showdown. Boom! He breaks past his trauma and unlocks his powers. Problem solved. But! Because he killed his friend's parent, the friend now hates MC and quits superhero school, vowing he'll take revenge. So now you have the seeds of a sequel sowed already. Maybe MC's friend teams up with a bunch of rebels who hate the concept of superhero school and want to restrict superpowers to the chosen few. Maybe it's their leader who decides who's "worthy" enough to wield the powers. So MC and co clashes with Ex-Friend and co. for the next story arc, and just when you think defeating Ex-Friend's cronies will solve the issue, BOOM! A plot twist.
Turns out humans weren't meant to have superpowers at all and if people continue to reproduce and pass on superhero genes, the genetic structure of humanity will collapse and mutate them into mindless monsters. Maybe callback to like some monsters that showed up earlier in the story by saying "they were mutated humans all along! the horror!" Now your conflict has taken another level beyond the whole "Ex-Friend gets revenge for MC killing his dad" thing. MC suffers a crisis of conscience, because what Ex-Friend's team proposes will essentially stabilize the superhero world even if it means forcibly removing powers from its population. Does he let them do what they want, or stop them because they're forcing their views on everyone "for the greater good?"
And so on and so on, as an example. Err...that was a lot of rambling but TL;DR:
1) Resolved conflicts still have effects, sometimes leading to newer problems
2) Smaller problems can build up to bigger problems
3) Shake up the status quo if everything seems too cut and dry from A to B.
This is an example of how I could build from one conflict to another basically. Sorry if it's kinda random, I made it up as I typed lol
EDIT: you don't have to follow this model but a lot of series like to go from minor > medium > major conflict as the story progresses, uncovering more "truth" for the readers to read while giving the characters time to mature and level up