I have a good pc all i am trying to do now is get good lighting graphics and effects

Use light baking see the tutorial in YouTube

As Whitefox777 said, there are plenty of good lighting tutorials out there, here are some that I found most useful:

- Lighting tutorial: 4 techniques to light environments in Unity | Unite 2022 - YouTube

- EVERY Image Effect in Unity Explained - Post Processing v2 Tutorial - YouTube

A lot can be done with simple shaders in Unity