Are you ok with a split keyboard?
If yes then the Glove80 might fit, although it's not completely silent.
Silent low pro switches are supposed to come out in a few months, but you'll probably have to solder those onto the keyboard.
I know there are keyboard enthusiasts events in some places of the world, which might have one.
I'd suggest checking out MoErgo's (Glove80 creators) Discord
Might find a way to try one there