Welcome to the Forum!
- Are Secure Boot and Fast boot in BIOS disabled?
- Is in Windows Fast Start-Up disabled?
- Does Your System run in Wayland or X11?
- Did You take a Look at the ''Additional Drivers'' Tab in Software & Updates if there is a Driver available for Your Wifi Card?
- Is Your System completely up to date?
- Can You post the Output of
rfkill listin the Terminal?