Why is my WiFi connected but I can’t access the internet?

I'm having a frustrating issue where my WiFi shows it's connected and secured, but when I try to open YouTube in my browser, it tells me there's no internet connection. I've checked the WiFi, opened Chrome, and clicked on the YouTube shortcut, but it still shows no internet. I also tried some games like Valorant and Roblox, but they don't work either. My phone and TV can connect just fine, so I'm at a loss here. Can anyone help?