Your fixture is not low voltage. ELV would mean low voltage, you need a dimmer for a 120v LED fixture. Call Lutron not kichler.

Kichler told me it is low voltage

The first dimmer is for led up to 150v. that worked but it made the buzz. That's the problem

Is there someone who can help me with this? I'm at my wits end. How do I know what dimmer will work without buzzing noise

You may need a Reverse Phase Dimmer such as the Lutron Diva DVRP-253P (Amazon, Bees) to eliminate the buzzing.

Call Lutron, they have customer service that is very knowledgeable and helpful, I have called them for years on projects.

I do not have a neutral wire that the Diva DVRP-253P requires. So far, I'm finding out that all dimmers for led fixtures require elv dimmers and elv dimmers require neutral wire. I don't know where to go from here. I could get a new fixture that gives off less light but how will I know it's the right amount? A dimmer gives flexibility so I can control that.

I have been on the phone with Lutron several times. What I have learned is the led light fixtures that can be dimmed require a specific dimmer which requires a neutral wire which I don't have. As long as I have this fixture that has integrated led bulb, I cannot get rid the the humming sound with a dimmer switch. The light is too bright without a dimmer. I am thinking of going back to a fluorescent light fixture which I had before I started with this led light. I'm wondering what others do about this problem. Thoughts and suggestions?

So you do not have a ground wire basically. I would like to see the space perhaps i can get you a fixture suited to all your needs.