Drivers side high beam not working?

The high beams are connected so it must be a wiring issue or connection. here is guide to help you test the connections and the wiring diagrams so you can see how the system works and which wires to test, you could just run a wire (orange) from one headlight to the other is needed.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.