For the sake of due dilligence, the following links should/will help you find the information needed to find system logs, and other system details, and how to post it to the forum.
Please note that as a new member, you are not (yet) able to post live links. After a qualifying period that will change. In the meantime, however, you can post a link so that it’s not clickable; between two backticks ``, which will return a result similar to this:
https://example.com
If a link you post in this way is useful, others can copy/paste it, rather than click it.
I hope this is helpful, and; Welcome to the Manjaro community. Cheers.