Just to clarify, low signal strength might be referred to as weaker, not quieter, as quieter means less noise
weaker signal should not result from using XLR in my experience.
quieter relates to ’noise’ in the signal, thus quieter is actually higher signal to noise ratio, which many believe is the advantage of XLR, which primarily exists for pro use to prevent interference in long runs of cables, crissing, crossing, adjacent to motors, amps, space heaters, the like.