Alternative Wifi Driver How to enable?

I have a Dell inspiron 3521. When I try to install FydeOs 14.1 on my laptop in the advanced section, there is an option to select an alternative wifi driver for Broadcom cards. But it is greyed out and can not be selected.
I installed the os anyway using tethering from my phone. After installation, wifi was not working.

  1. Is there a way to select the Broadcom driver after installation? (There is an option in FydeOS 13 to choose this driver in the fydeos settings section in settings. it is no longer available in fydeos 14.1)

  2. Is there another way to enable this driver?

  3. Any other ways to get my wifi working?
    Kindly help me sort this out. by the way, I have installed FydeOs as a dual boot system with ubuntu 22.04
    I appreciate any help you can provide.