You're being deliberately obtuse and conflating completely different situations, and I think you're doing it on purpose to muddy the waters. An accusation after a breakup that cause a fight among friends is a very different situation from a report to the police. Even a report to the police often doesn't trigger an investigation. And God knows it rarely triggers an actual prosecution. These are simply not things that you need to worry about, if you're not running around the world raping people. If it causes you anxiety that severe, get therapy.
Because it's not the giant boogeyman that internet apologists like to pretend it is, with data:
Because I'm sorry, but losing a few friends is not a terrible enough consequence for me to get worked up about. Shit happens, friends get in fights and stop being friends over all sorts of dumb shit. I see zero reason why that would cause someone to go through their lives in mortal fear that they might be "falsely" accused of a sex crime.
The issue of how to handle sexual assault accusations is not complicated. I told you, we handle them all the time in the medical field. You default to protecting the accuser, you do a thorough investigation, if the investigation turns up no evidence, you move on.
A "he said, she said" situation that never gets formally investigated, but causes the breakup of some friendships is not as terrible as being actually raped. It's just not.