I Pressed forget this device and now I cannot conne back to my phone

Hello Saif_iraq,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with connecting to your iPhone with your AirPods. Did you try the steps in the related article at the top of the page? If so, what happens when you try to connect? Do the steps listed here help: If your AirPods won't connect - Apple Support

"If you can't connect to your iPhone, iPad, or iPod touch

1. Make sure that you have an iPhone or iPod touch with the latest version of iOS, or an iPad with the latest version of iPadOS.
2. Put both AirPods in the charging case and make sure that both AirPods are charging.
3. To make sure that Bluetooth is on, go to Settings > Bluetooth.
4. If your AirPods are connected, make sure that they're selected as your audio device. If your AirPods appear in the list of devices but they don't connect, go to the next step.
5. Close the lid, wait 15 seconds, then open the lid. Press and hold the setup button on the charging case for up to 10 seconds. The status light should flash white, which means that your AirPods are ready to connect.
6. Hold the charging case, with your AirPods inside and the lid open, next to your iPhone, iPad, or iPod touch.
7. Follow the steps on the screen of your iPhone, iPad, or iPod touch.
8. Test your AirPods. If you still can't connect, reset your AirPods."

We hope this helps.

Cheers!