I used to be a huge Manjaro fan. There were many ways it let me down, some of which were just bad governance.
The biggest problem though is the AUR. Manjaro uses packages that are older than Arch. The AUR assumes the Arch packages. This, if your use the AUR with Manjaro, your system will break.
It is not a question of if Manjaro will break but when. Every ex-Manjaro user has the same story.
For me, EndeavourOS is everything that Manjaro should be.