MacBook does not connect to internet?

I suggest you Forget the network that's causing problems and recreate it from scratch.

Connect your Mac to the internet using Wi-Fi - Apple Support

To join a Wi-Fi 6E network, you need one of these Apple devices:

• MacBook Pro (14-inch, 2023) or MacBook Pro (16-inch, 2023)
• Mac mini (2023)
• Mac Studio (2023)
• Mac Pro (2023)
• iPad Pro 11-inch (4th generation) or iPad Pro 12.9 inch (6th generation)

To create a Wi-Fi 6E network, you need a Wi-Fi router or access point that supports Wi-Fi 6E and has its 2.4GHz or 5GHz bands also enabled, preferably using a single network name (SSID) across all bands.