I've got lighting problems on most of my lots since the now infamous patch 1.69 in January (which broke many console controls). In build mode it's impossible to see, I have to add roofing last to help let light in. Even adding ceiling lights and having them all switched on doesn't help. It's not my smart TV and it's been occurring on Xbox Series S and Xbox Series X.
When I add my lots to the gallery they look so dark, I turn every light on in the daytime to get the images to look brighter. I just added a large San Sequoia lot called Hopewell Heights to the Gallery and it was really frustrating to build as some rooms went pitch dark more than others. It has a diagonal corridor and at one point I had about 4 lights in one tiny space to light just that one corridor. I rebuilt it and it brightened up. I've built this lot in a similar style before, just last year and it's usually really bright as it's all windows.
It wasn't a problem in Tartosa or Sulani but it's really bad in The Bramblewood and San Sequoia. I may test Mt Komerebi next as I'm building today. My next Sim is my interior designer so I'll get a chance to test it as she's working on other lots. I'm recreating a lost game so can compare building on some of these lots before and there wasn't this problem until recently, at least not to this extent. Usually switching a light on is enough to brighten it up.💡