Skipping misago as it is not installed

How did you install the Misago in first place? Are you using misago-docker? It has a different upgrade process: misago.gitbook.io/docs/setup/upgrading

There are two Misago repositories. Main one (misago) and "misago docker" one (misago-docker). Only misago-docker repo supports upgrades. misago repo contains application code and is only for developers to use. pip install misago doesn't make sense on it.

I also want to learn can I install your project on my web server?

Follow this guide: misago.gitbook.io/docs/setup

I don't have any server or account on digitalocean

The guide uses DigitalOcean as an example. You can use any server that runs Linux and Docker.

Can you share recent project's source code on github?

GitHub is always recent code. I don't have any private Misago copy that's better than what's on GitHub.

I actually work on localhost. And I installed from github :) I followed your Installation Directory (docker-compose up) while setting up system.

If you installed from main repository, then it's impossible to update using pip, because its already recent code. ;)