how to improve the the colliding system

hi i have a enemy and a script every think is working but my bullets donot collide with the enemy because they are to fast is there a another solution with out making the bullet slower

A very common solution for bullet collision is to use raycasting instead of a collider

void Update(){
    bulletTravel = bulletSpeed * bulletDirection * Time.deltaTime;

    RaycastHit hit;

    //Cast a ray in the direction we are going to move this frame and see if we hit anything
    if(Physics.Raycast(transform.position, bulletTravel, out hit, bulletTravel.magnitude)){
        //We hit something, do bullet hit logic here
    } else{
        //We didn't hit something, move the bullet normally
        transform.position += bulletTravel;

since shots are fast, maybe few raycast on shoot only (and less damage if far) with a delay to take damage based on distance and speed