Broken specular shader code (CG)

Recently I've been making shaders, and I put this on a capsule

 Shader "Example/Specular" {
 
     Properties
     {    
         _Color ("Color", Color) = (1, 1, 1, 1)
         _Shininess ("Shininess", Range (0, 1)) = 0.5
     }
 
     SubShader
     {
         Pass
         {
             Tags
             {
                 "LightMode" = "ForwardBase"
             }
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
 
             float4 _Color;
             float4 _LightColor;
             float4 _Shininess;
 
             struct vertexInput {
                 float4 vertex : POSITION;
                 float3 normal : NORMAL;
             };
 
             struct vertexOutput {
                 float4 pos : POSITION;
                 float4 col : COLOR;
             };
             
             vertexOutput vert (vertexInput input) {
                 vertexOutput output;
                 float3 normalDirection = normalize (mul (float4 (input.normal, 0), _World2Object).xyz);
                 float3 lightDirection = normalize (_WorldSpaceLightPos0.xyz);
                 float3 viewDirection = float4 (_WorldSpaceCameraPos.xyz, 1) - mul (UNITY_MATRIX_MVP, input.vertex);
                 float atten = 1;
                  float3 diffuseReflection = atten * _LightColor.xyz * _Color.rgb * max (0, dot (normalDirection, lightDirection));
                  float3 specularReflection = max (0, dot (normalDirection, lightDirection)) * pow (max (0, dot (reflect (-lightDirection, normalDirection), viewDirection)), _Shininess);
                  float3 lightFinal = diffuseReflection + specularReflection + UNITY_LIGHTMODEL_AMBIENT;
                 output.col = float4 (lightFinal, 1);
                 output.pos = mul (UNITY_MATRIX_MVP, input.vertex);
                 return output;
             }
 
             float4 frag (vertexOutput output) : COLOR {
                 return output.col;
             }
 
             ENDCG
         }
     }
     Fallback "Diffuse"
 }

and it made a bunch of vertices facing the light white, and the rest midnight black. Im so overwhelmed with learning this new language, its like when i was trying to learn C#, it was like no one could help me. Im afraid there really is no one to teach me this language though.