I'm writing this on my phone (laptop is locked in my room), so I apologize if this isn't formatted well. I also know nothing about tools/doorknobs, so forgive me for not knowing the exact terminology for stuff.
Left in a rush and accidentally locked myself out of my bedroom. It is a button lock. This has happened to me before, and usually I'm able to get back in by putting a small flathead screwdriver into a round latch thing and turning it until it unlocks. It's so worn down now that that method isn't working anymore. There are no exposed screws, only this tab on the side, but I'm unable to fit anything in it.