Can someone help me fix my problem? Thanks!

There must be something strange with my internet connection, because for the past day or so everything internet related works- except YouTube videos.

The player seems to load fine but 99% of the time, the videos are stuck at 0:00, with the occasional video actually playing.

It's happening on every device in my house- but the same devices on other connections are fine...

I've never had this problem before and I don't know what to do to fix it, whatever help I could get would be appreciated!!! Thankyou!