Cannot connect to 192.168.0.1 (or use internet on my laptop)

Hi,

I am unable to connect to internet on my laptop without ethernet cable. I also cannot connect to 192.168.0.1 whilst trying to troubleshoot from various articles.

It was working but I'm not sure what I have done to stuff it up.

Can someone please help me. I'm in IT but really struggle when it comes to these sorts of things.

PS. Apologies as I know this query is probably a duplicate but I have been browsing other threads and am still having issues.

Thanks
Priscilla