Why is my front camera not working?

Hi, my camera was working fine until one day I opened Google Lens and the app froze. I somehow managed to exit the app and then opened the camera to check if everything was okay. When I switched to the front camera, the pop-up came out, but the camera app froze and I couldn’t switch back to the rear camera. I also couldn’t open the gallery from the camera.

I was able to close the camera app and the phone itself didn’t hang, but after closing the camera the pop-up stayed out and didn’t go back down.

Does anyone know what the issue might be or how I can fix it?