Most modern ARM images are 64-bit. Check:
Here are some relevant links:
Use a tool like balenaEtcher to flash the image onto a USB drive or SD card. ubuntu arm desktop
sudo apt install tlp tlp-rdw sudo systemctl enable tlp Most modern ARM images are 64-bit
A polished, familiar interface that works out of the box. ubuntu arm desktop
sudo apt install chromium-codecs-ffmpeg-extra