Solved! My tablet doesn't connect to mobile data

[NikFire321]

Yoga Smart Tab 10.1 inch
Android 9
It's mine from Christmas and it worked the firs week or two perfectly and now recently it's extremely hard to get it to connect to Wi-Fi and i seems like it can't find any mobile data connection it just shows the 4G and then the full white triangle
Please help

 

[Saga Lout]

It's saving you a fortune by failing to connect to Mobile Data. Exactly what does it do to make hard when connecting to your own wi-fi?