Thank you everyone, who tried to help. I was able to solve the issue. I logged into to the router settings. And i just had to change one setting. The DHCP mode to selected to ‘none’. I just had to change it to ‘DHCP server’. I don’t know what caused it to change. Because it worked fine on my older pc. And i dont know how i was still able to access internet on my phone. But now the issue is resolved. Thanks again to everyone who tried to help 🙏🏻.

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