How do I adjust screen brightness in Kubuntu 20.10 using a NVIDIA card?

After installing Kubuntu 20.10 on my laptop with a NVIDIA Geforce GTX 1650 card, I can’t lower the screen brightness. I have also installed the latest version on the Geforce GTX 1650 driver from the NVIDIA website.

DreamProxies - Cheapest USA Elite Private Proxies 100 Private Proxies 200 Private Proxies 400 Private Proxies 1000 Private Proxies 2000 Private Proxies ExtraProxies.com - Buy Cheap Private Proxies Buy 50 Private Proxies Buy 100 Private Proxies Buy 200 Private Proxies Buy 500 Private Proxies Buy 1000 Private Proxies Buy 2000 Private Proxies ProxiesLive Proxies-free.com New Proxy Lists Every Day Proxies123