A month ago my PC was rebuilt or something
I wanted to install Minecraft, but he said I had to buy it again and I don't want to spend my pocket money on it again.
No, you just have to log into your existing account
If you log in to Mojang with your Mojang account, you should be able to download it as before
https://www.minecraft.net/...e/download Register beforehand
Go to minecraft.net and register with the email you used to buy Minecraft, then go to install.
Where do I do that exactly?
This is a trial version
It is if you do not log in to your account in the launcher, otherwise not.
So when I log in, is it the full version or what?
Download> install> open> register> full version will be downloaded automatically if you have previously bought Minecraft with your account.
https://www.minecraft.net/...net/de-de/
On the top right on "register" and enter your username or email + password
