Laptop wakes from sleep, randomly

I've had this Dell Inspiron i5577 for quite a while, and now, it's been waking up randomly at night. This morning I woke up to my computer on, well, sort of. It was on, the fans were loud, but the screen wasn't on. My RGB external keyboard was on too, but my mouse wasn't. I'm so confused as to why my computer wakes up. I've disabled wake timers and auto maintenance before, and it solved rhe problem temporarily. Today, the issue came back to haunt me. Any help is appreciated and, I think this might be because of the windows update? At night, I don't close my laptop lid because my keyboard is there, should I close my laptop lid? Any help is appreciated, Wake on LAN isn't an option in my bios, but I have toggled off some settings from the wifi and Ethernet adapters to stop that from waking my computer. It seems as if this issue happens every 2 weeks... and I just had my laptop update 1-2 days ago because it just refused to NOT update ._. Any help is greatly appreciated. I've tried Brink's "See Wake Sources" tutorial, but if I remember correctly, it said the source was either the power button or "unknown." I don't understand what's going on, this is extremely frusterating.

From a command prompt run powercfg /lastwake that should report what woke the system. You can also pull a sleep diagnostic report with powercfg /systemsleepdiagnostics