Myth-Auth in HMVC structure

Hello everyone

I'm new to CI4 but I am experienced in CI3. Now I want to use Myth-auth in HMVC pattern in CI4 as a module named "Addon/auth".
For some reason I selected manual installation.

After install, should I change all namespace paths in all php files or is there a better approach?
For example:
Myth\Auth\Authentication;
to
Addon\Auth\Authentication;

I think by selecting this way, I will lose all updates. Also I installed Myth with composer on my localhost, but it is installed in a third party folder and I do not want this structure.

I want this structure with future updates capability:
ci/addon/auth
ci/app
ci/system

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Thanks