networking – Hi there, I’m a newbie to ubuntu and just installed ubuntu 20.04 and after the install I noticed that my wifi driver was unrecognized

I was using windows 7 before the update and before the update the driver was working good it was detecting all the WiFi networks but after the update there is a notification which is ‘NO WIFI – ADAPTER FOUND’. My WIFI driver model is -07:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)

Please help me, I have to attend my classes, so please help me as soon.

Thank you!