Do you know what the wireless nic model is? You might try
lspci | grep -i network
and see if the network controller comes up. (Also viewable in System Reports application, in the System Information tab under Network".
Did you install from the Edge ISO or the regular one? The Edge ISO ships with a much newer kernel for updated hardware support.
If you have access to a wired connection you can also update to a newer kernel manually, in the update manager it is under View -> Linux Kernels. You can select the 6.5 and choose Install.
The type of wireless card will be the most important thing for people to help though.
I bought a cheap-ass Asus laptop knowing that the installed wifi module was not supported by linux. So I bought a new wifi module that had linux support for like $20 and swapped it in.
For an easy GUI way to find these, you can go to the
bottom-left menu > administration > system reports
Then go to the System Information tab.
You should have the kernel i.e. 6.3.0-39-generic at the top
Scroll down, and under network you should have something like
Device-1 Realtek RTL8111/8168/8411 - that'll be the WiFi card.
In case you didn't know, the Kernel contains drivers for things like WiFi and other devices.
An older kernel tends to be more stable (the bugs have been fixed) - but it cannot contain the drivers for devices that didn't exist at the time.
By default, Mint is likely using the kernel 5.15, from 2022. If your WiFi device is newer than 2022, it won't work yet. However, you can install a newer kernel (mine, above is 6.3.0). I had to do this to get the WiFi working on my Thinkpad p14s. This is quite simple and safe to do, and completely reversible if there are problems.
There's a chance if the WiFi card is particularly new or obscure, that it won't work at all currently. We're waiting on the company, or more likely a talented volunteer, to write the drivers.
In this case, you may need to buy a USB WiFi adapter, for example TP-Link USB Wifi. I had to do this with my Dad's laptop recently. Within the next year, he probably won't need it anymore, as the drivers for the internal one will likely exist.
Some distros do not include all supported device firmware in the base system. You have to determine your wifi adapeter and install the firmware for it. You may want to use usb tethering from your phone for that.
Lspci should list all your pci devices, one of which will be your WiFi adapter. Confirm its make and if it requires a kernel module. I would bet it's a broadcom
Yes, I know that. And then the outdated kernel has missing drivers, or packages are outdated, etc. and you are searching for solutions that only apply to Mint