Rsndom Function c#

In my OnTrigger function when the player collides with Mystery Pickup it should randomly pick a number for ‘i’ to call a weapon for my star ship sort of like mario kart. It keeps picking 6 and shooting a nuke everytime. Any ideas on what I’m doing wrong? Thanks.

edit: here’s the working code.

if(other.gameObject.tag ==("MysteryPickup")) 
		{ 
		 
			 int numOptions = 7;
             int arrayLength = numOptions;

             for(float i = 0; i < arrayLength; i++){

             float prob = 1f / numOptions;
             if(Random.value <= prob){

             //do whatever i is
             
					if(i == 6) //nuke
					{ 
						shootScriptB.nukeOn = true; 
				        Destroy(other.gameObject);
					}
					
					if(i == 5) //shield
					{ 
						shieldOn = true;
					}
					
					if(i == 4) //speed boost
					{ 
						speed = 6;
			            speedBoostOn = true;
			            Destroy(other.gameObject);
		                jet1.SetActive(true);
		                jet2.SetActive(true);
			            StartCoroutine(SpeedBoostTime() );
					}
					if(i == 3) //double missiles
					{ 
						shootScriptB.doubleMissileOn =false;
		                shootScriptB.missileON = true;
			            Destroy(other.gameObject);
					}
					
					if(i == 2) // missile
					{ 
						 shootScriptB.doubleMissileOn =false;
		                 shootScriptB.missileON = true;
			             Destroy(other.gameObject);
					}
					
					
					if(i == 1) //double lazers
					{ 
						shootScript.doubleLazerOn =true;
		                shootScript.lazerON =false;
			            Destroy(other.gameObject);
					}
					
					
					Debug.Log(i);
					break;
         }
             numOptions--;
         }
				Destroy(other.gameObject);
		}
	
	
	}

Maybe you can try Random.Range? Unity - Scripting API: Random.Range
Then do a Switch statement based on the value of Random.Range.

Got it to work.