Safari can't find the server

Hello.

I use MacBook Pro m1, Ventrua OS

The error 'Safari can't find the server' appears randomly. The same site can work today and tomorrow this error is back.

I did try to reset all settings of the browser, delete all extensions, clear all cookies and even re-install Ventura OS!

I don't want to abandon beautiful Safari for ugly Firefox or others.

Help, please.