Thanks for your suggestions, my specs are:
Linux piOne 4.19.75-v7l+ BST 2019 armv7l GNU/Linux
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 10 (buster)
Release: 10
Codename: buster
I’ve switch to the MongoDB Atlass free tier, which suits my current needs, as I’m just following the MongoDB university lessons.
However, I like to have a local sandbox for testing purposes on my raspberry pi, docker helps me keep the OS clean and easy to manage, I would probably consider installing it directly if my project requires this.
I have just figured out that I am running a 32 bit O/S. So this is probably the reason I could not install a later version of MongoDB.