 When you make the unfortunate trip into the backrooms, you'll end up on what's known as level zero. This is the first level in the backrooms and it's very confusing to new people. The only things you'll have with you are whatever was physically on you when you glitched here. So, unless you carry food with you or water with you at all times, you've got nothing. Your first order of business is to not freak out. Sanity is one of the most important things to keep in the backrooms. Make sure you don't lose hope or your mind. The yellow walls and the buzzing lights will be really disorienting at first and really confusing to you, but you can make it out of here, trust me. You have two options of escaping at this level zero area. The first one is that you can try to no-clip through a wall by yourself. Now, no-clipping is when you physically glitch into or through something and then end up somewhere else. This is the most popular way of traveling in the backrooms, so you probably should learn how to soon anyway.