Simple(I thought) Latch issue

Hello, I need to latch the input of one of my pins on startup and hold that value to be used for a mux control bit. (its flipping a usb c and rerouting a spi bus)

I cant seem to get the latches working right to just hold the initial value and not change when the initial pin used changes states. ie, I want to use a CS line (starts high) to detect a signal location (my other signals are all low)

Is there a clever way to setup the latch so it grabs the initial value then does not change until a power cycle?

I am developing on the SLG46824.

Thank you.