Ubuntu serious wifi problem

The theme of wifi is very serious for ubuntu today especially for broadband. The required driver is installed (Broadcom STA). The wifi is accessible through hot spot of my phone. The only problem is with the broadband wifi. At some point showing sometimes not even showing the names. Even if you can access broadband wifi through Windows 10 in dual boot. I tried all the possible solutions available on the web. It's a mistake? Or some serious problems related to the system.