Hi @Tob1nator and welcome to the Manjaro community.
I’m afraid you haven’t provided much information to begin speculating about your issue.
However, there are a few items concerning black screens in recent Known Issues and Solutions and listed in every Update Announcement thread. I would look through those to see which of them might potentially affect you. There is also the forum Search that might reveal something useful.
In the meantime; and as mentioned by @Mirdarthos
As a new forum user, please take some time to familiarise yourself with Forum requirements; in particular, the many ways to use the forum to your benefit:
The Update Announcements should be checked frequently for important update related information. The Known Issues and Solutions section should generally be a first port of call before posting a request for support, in case an issue has already been addressed.
Output of the following command (formatted according to forum requirements) may be useful for those wishing to help:
inxi --admin --verbosity=8 --filter --no-host --width
Be prepared to provide more information and outputs from other commands when asked.
Regards.