If you come across libssl1.1 issue, there’s an option of installing the library via ubuntu repository OR installing the mongodb itself from ubuntu repository. I personally prefer the latter since I don’t like having a single apt setting just for a single lib. Just follow https://www.mongodb.com/docs/manual/tutorial/install-mongodb-on-ubuntu/.

If you don’t know if you’re on bookwarm, this is how you tell:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 12 (bookworm)
Release:        12
Codename:       bookworm