I have a Raspberry Pi 4B 64 bit. I have flashed an Ubuntu Mate 22.04 Desktop 64 bit onto a 64GB SD card with Win32DiskImager (the reason I don't use official Raspberry Pi Imager/Etcher is because the imager cannot validate my SD card for some reason; I have tried another SD card 32GB but still failed).
I wanted to access the RPi 4B with SSH. I have already connected it to the same network with router. I cannot find its IP in my network with Angry IP Scanner or Advanced IP Scanner.
I have tried a method in many older tutorials teaching me to create a "SSH" file and "wpa-supplicant.conf" in the boot partition with the correct Wi-Fi credentials. It didn't work. Also some tutorials also stated this method is no longer relevant in newer versions.
Any advice on what I can do? Highly appreciated!
ps. Ultimately I am trying access the Pi to install LCD package.
FYI: The Pi was actually working fine with Ubuntu Mate Desktop 32-bit with the image provided by the seller with the LCD package and all SSH setting done for me. It's just that I can't seem to replicate the same for 64-bit version if I do everything manually just by myself.