I've played some backrooms games and I feel like they get rid of the original feeling the backrooms had. Instead they fill it with stuff that was never in the backrooms. I wish for a backrooms game that is just a bunch of levels that lack the creatures and lore, instead have a bunch of levels that resemble the nostalgia people once had when they were a child. The nostalgia of classic games, doing fun stuff at school, the park or at the movies.
check out The Complex on steam, there's a demo for it I won't spoil anything, but it was a good mix of building dread & the isolation of slightly familiar places
the first bit is just all yellow backrooms stuff tho so you gotta go thru it first