What's wrong with my game?

What's going on with Minecraft here?

Update

Yes great my beloved 1.8

Minecraft Java Edition and Minecraft Dungeons are now in one launcher.

But was explained when you opened Minecraft…

There was an update for the launcher.

This resulted in the following changes:

new wallpaper
all profiles, the mods etc. Contain a small warning sign (this is only visual, has nothing to do with the function of the profile)

The 1.8 works?

Yes, but hold the triangle with the exclamation mark. But it is safe to do with Microsoft and Mojang. Everything works like it used to.

Didn't come with me but why the triangle with the exclamation marks? Maybe it's up to the thing with Microsoft. And the Java accounts that will soon be available

I said it is an unsafe version or something and I'm responsible for what happens when I start this.

Hold your mouse over the triangles. It says why they are there.
As if the 1.8. Would remove. Most people play on it.

No,
that has nothing to do with Microsoft:

Add warnings when starting versions of Minecraft that might not support the latest in-game player safety features

There was a launcher update so there's a warning about older versions or modded ones. But everything works fine anyway