Please tell us some basic information before asking for help:
Hello, Gokulakannan 24.
Please refer to the link below to troubleahooting the Wi-Fi issue.
If there is an inoperable part of the process, please let me know which step is inoperable.
Meanwhile, I have PM you for more detailed information.
Please check the top right corner of the screen and kindly share the details requested in the PM inbox.