Pitch black bedroom yet has no trouble finding his gun under the bed, laughable.
I'm not defending OP, but I'm able to find things in my house in the pitch darkness because I'm familiar with where the things in my house are located.
Having said that, Roux stated during OP's bail hearing last year that OP switched which side of the bed he typically slept on (usually slept on right, switched to the left due to an alleged shoulder injury). The curious thing is - his gun holster was found (during the investigation) on the floor of the left side of the bed.
Did he also move his gun to the left side of the bed when he allegedly switched sides? It's possible.
If so, how was he able to find it so quickly in the 'pitch dark' if it wasn't in its usual place? Experience has taught me that if one usually keeps an item in a particular place, then one can find it easily. However, if that same item is then moved, until one becomes accustomed to its new location, one will automatically look for it in the previous, familiar place and will not look for it in the new place.
We are all creatures of habit. Based on ST's testimony, OP is no exception to that rule.
So, the question that you posed remains: how did OP find his gun under the bed (the left side - not the usual side he slept, nor the usual side he kept his gun) in the 'pitch dark bedroom' - especially in an alleged state of heightened anxiety due to fearing a dangerous intruder had broken into his home?
Under extreme stress, humans are hardwired to follow force of habit, as the 'fight or flight' response suppresses higher cognitive functions - including brain functions associated with short term memory formation.
I think that if OP had truly believed an intruder had entered his home through the bathroom window, and if he had truly switched the side of the bed he typically slept on, he would have had difficulty locating his gun in the 'pitch dark'.