I was able to easily install mongosh on Linux Mint 21. It should be the same instructions for Ubuntu 22.04:
sudo curl https://www.mongodb.org/static/pgp/server-6.0.asc | gpg --dearmor >/usr/share/keyrings/mongodb-key.gpg
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list
sudo apt update
sudo apt install mongodb-mongosh
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