Few problems for a new user

### What Happened?

Hi,

Having a few problems setting up a new install of Elementary OS. Apologies if this is in the wrong place as there wasn't an option for the Web browser in the Feedback app.

Firstly, I can't seem to change the default apps. I've installed Zen, Vivaldi, Thunderbird and VLC but none of them appear when I try to change the default apps in the settings.

Secondly, the default web browser (Epiphany?) will not save sites as Web Apps. I select the menu option and nothing happens.

Running the latest version of Elementary OS, tried rebooting several times.

### Steps to Reproduce

As above

### Expected Behavior

As above

### OS Version

8.x (Circe)

### Session Type

Secure Session (Wayland)

### Software Version

Latest release (I have run all updates)

### Log Output

```shell

```

### Hardware Info

_No response_