I'm new to arch-based distros and I've been using Manjaro (and pacman directly from the terminal without things like pamac) for 1 month or so with the same nvidia graphics card (gtx 1660 super) and I've never seen this error in any package:
looking for conflicting packages...
error: failed to prepare transaction (could not satisfy dependencies)
:: installing nvidia-utils (460.80-1) breaks dependency 'nvidia-utils=460.73.01' required by linux59-nvidia
I've seen that this error could happen with experimental packages and know the solution is just use another more stable package but I don't know what to do with what looks like an important package.