Basically, just purchased and downlaod/installed Minecraft today.

I installed the official launcher, logged in with my Microsoft Account, and when I tried to start the game to play, it asks me to pick a username, I enter my desired user and this ongoing error appears: (See picture 3)

Things I've tried to do to solve it:

• Closed and restart the launcher several times. Forcefully closed. In Windows' 10 app Minecraft Launcher settings, reapaired, restored data. Same for Minecraft Java edition.
• Uninstall and Re-Install Minecraft Launcher//MinecraftInstaller and data. From my PC. Try to re-install downlaoding the launcher installer from the minecraft.net web. Didn't work. So I tried to re-install in the Microsoft Store. In the Game apps section.Didn't work.
• Restored and repair Xbox App and Xbox Game Bar.
• Updating to Latest Java version.
• Sign in and out from my microsft account.
• Restarted several times my computer.
• Close the launcher and try running it as an admin.
• Went to Minecraft.net logged in my Microsoft account and  in My profile> My Games > Set up your profile tried to set a Java username. Didn't work. When pressing Set profile name, the button would stand black and wouldn't load nothing. (See picture 5)
• Released space from main Hard Disk C:// where Appdata is located. 
• Open-and closed Minecraft Installer several times. it downloaded automatically update files and it updated itself. error still ongoing.

That's pretty much it. Don't know what else to do. Issue still persists.