Turns out there’s a different nvidia driver for each kernel version
That is literally every version of Linux out there. IDK what you think was different about Manjaro in that respect. Nvidia hates linux and it’s a tough thing to keep it running, especially on a rolling release. Use the DKMS driver if you’re going to update kernels a lot. At least manjaro seperates the kernel installs from the general updates to minimize this disruption.