Default view for different users?

I recently got a tablet that I wanted to use as a “HA” display on my wall. I created a new user for it and a new view that is more tailored for it. I have about 10 views. Whenever I close and open HA, the first view is always shown. That has been fine before but not I wanted the tablet to default to the 10 view instead. I did find the option to not show views for specific users. But the problem with that is that I still want to be able to access the other views on my tablet, I just want to change the default one.

You can select which dashboard you want to show as a default for the tablet/user in the profile settings of the app or a browser, but (without major trickery) it will always default to the first view of the dashboard.

Create a dashboard with your customized view in the first/left-most position and set it as the default dashboard in the ‘Browser Settings’ of the profile section of that user on the app.

I cannot select a view there?

I am talking about these Views, inside the dashboard:

Correct!
You can only see the dashboards.

That’s why I suggested to create a new dashboard and add your customized tablet view to it - keep it in the leftmost place if you’re adding new views to it.
Then pick the new dashboard from the dropdown.

Ok but since I still want to use my other views by simply swiping right and left, I would had to copy all those as well and then try to keep them in sync whenever I change something.

An option to conside is to use Browser Mod using a Default action with browser_mod.navigate for the device/user/global.

You could use this card, which allows you to create the view in one dashboard and then display it in multiple others:
:jigsaw: New Custom Card: Embedded View Card – Embed any view into another - Share your Projects! / Dashboards & Frontend - Home Assistant Community