People seriously overestimate the volume of spellcasting. Verbal components are “normal noise level”, it’s equivalent to normal speech. Some SPELL EFFECTS are very loud - a fireball or lightning bolt is going to be heard clearly hundreds of feet away, you could make arguments for people being able to hear spells like this up to a mile away or even more in some environments.
The verbal component itself shouldn’t be audible more than 120 feet away at the absolute farthest. I would even argue that spells like suggestion have very quiet, nearly imperceptible verbal components. Other spellcasters watching the spell being cast would clearly see that it’s a spell, but to the average person someone casting a spell like suggestion would literally appear to just be doing a jedi mind trick.
I somehow simultaneously do things old fashioned and newfangled at the same time. I use talespire, everyone fills out a character sheet pdf that gets checked once at the start of the campaign and you just trust they aren’t putting wild shit on there throughout, and any homebrew items are shared via typing up a description and screenshoting it.
It’s like we’re literally digitally re-creating old school tabletop play before tools and apps existed.