Is MSIX useful when I'm not using the Microsoft Store?

I have experience deploying a .NET Framework Windows Forms App using ClickOnce.

In 2021, I used MSIX to package a .NET 5 WPF Application. However, it didn't support automatic updates like ClickOnce, so I had to inconveniently use Microsoft App Center for updates.

Since it was an app for internal testing, I packaged MSIX through a test certificate.

Therefore, when distributing, I also had to distribute the test certificate used in packaging, and my colleagues had to manually install the certificate.

I think this part is inevitable.

Then, does MSIX currently support easy packaging and updates like ClickOnce?

This time as well, I'm planning to distribute a test app used within the company, so I will not be using the Microsoft Store.

In this case, how can I easily distribute and update it?