Macbook Not Connecting to App Store and Apple ID Server when Connected to Wifi

Hi!

I'm trying to update my OS and apps on my macbook but I can't connect to the app store when using my home wifi connection. I usually get a "Cannot connect to App store" message when I open my App store, and also a "Cannot connect to Apple ID server" when signing into my Apple ID.

Then I tried connecting my macbook to my mobile data conenction from my phone and I was able to sign into my Apple ID account and access the app store.

What could be the cause of this? I don't want to rely only on my mobile data everytime I update my macOS and apps, they're too big and takes a huge toll on my mobile data.

Thanks