My macbook has some issues in connecting to internet it says wifi: no hardware installed

A few articles suggest a reset of NVRAM and SMC could help. Depending on vintage

of the Mac's system and hardware, SMC reset varies. As these instructions morphed

to cover several hardware builds, so has the varied wording of those instructions.

• How to Fix WiFi No Hardware Installed Error on Mac OS X | unlockboot (older)

https://www.unlockboot.com/fix-wifi-no-hardware-installed-error-on-mac-os-x/

• Fix "Wi-Fi: No Hardware Installed" Error on Mac OS X | osxdaily

https://osxdaily.com/2016/07/11/fix-wi-fi-no-hardware-installed-error-mac/

These include both 'System Management Controller' and NVRAM reset instructions.

Apple support's article covers variety of SMC instructions, w/ 'Intel-Based' hardware.

• How to reset the SMC of your Mac - Apple Support

https://support.apple.com/en-us/HT201295

A separate action is used to reset the SMC that doesn't affect:

How to Reset contents of NVRAM or PRAM.

https://support.apple.com/kb/HT204063

..Use neither of these, should your Apple run Silicon M1+ system-on-chip..

• Apps available in macOS Recovery on a Mac with Apple Silicon - apple support

https://support.apple.com/guide/mac-help/macos-recovery-a-mac-apple-silicon-mchl82829c17/mac

Hi,

Try to check your MacBook Pro WiFi module with Apple Diagnostics if it reports WiFi hardware error(CNW001, CNW003 to CNW008).

Use Apple Diagnostics to test your Mac - Apple Support