Scriptable object problems

Enemy health is supposed to be 50hp/takes 5 hit to kill but after I kill one the rest are one hit. I don't have this problem before I added scriptable objects on my enemies, I use inheritance on my enemies and it works perfectly fine but a lot of tutorials say scriptable objects is useful so I tried to combine them but now the "hitPoints" are stacking into negative. Im still a beginner so I don't know what's better and what's the difference between inheritance or scriptable object. btw is use C# This is the base class of the inheritance

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class EnemyClass : MonoBehaviour
 {
 
     [Header("Attachments")]
     protected private Transform target;
     public EnemyHealthBar healthBar;
 
     public EnemyData Info; //The scriptable object
 
     void Start()
     {
         target = GameObject.Find ("PlayerCharacter").GetComponent<Transform>();
         Info.hitPoints = Info.maxHitPoints;
         healthBar.SetMaxHealth(Info.maxHitPoints);
 
         target = GameObject.FindGameObjectWithTag("Player").GetComponent<Transform>();
 
     }
 
     public void Update()
     {
         Move();
     }
 
     protected virtual void Move()
     {
         if(target != null)
         {
         if(Vector3.Distance(transform.position, target.position) < Info.chaseRange)
         {
 
             if(Vector3.Distance(transform.position, target.position) > Info.stoppingDistance)
             {
                transform.position = Vector3.MoveTowards(transform.position, target.position, Info.movementSpeed * Time.deltaTime);
             }
             else if(Vector3.Distance(transform.position, target.position) < Info.stoppingDistance && Vector3.Distance(transform.position, target.position) > Info.retreatDistance)
             {
                transform.position = this.transform.position;
             }
             else if(Vector3.Distance(transform.position, target.position) < Info.retreatDistance)
             {
                transform.position = Vector3.MoveTowards(transform.position, target.position, -Info.movementSpeed * Time.deltaTime);
             }
 
         }
         }
         
 
     }
 
     ////////////////////////////////////////////////////////////////
     public void ReceiveDamage(int damage)
     {
         Info.hitPoints -= damage;
         healthBar.SetHealth(Info.hitPoints);
 
         if(Info.hitPoints <= 0)
         {
             Dead();
         }
     }
 
     protected virtual void Dead()
     {
         Destroy(gameObject);
     }
     ////////////////////////////////////////////////////////////////
 
 
 
 
 }