Press W to increase your speed, press S to decrease your speed. Press the left arrow to pitch up, and press the right arrow to pitch down. This flight simulator rates your landings, which is a really cool feature!
If you don't see the speed & altitude text fully, keep clicking the green flag until you do. Credits: Awesome feedback by @Ralleigh & @Cardinal7. If it lags, run it on Turbowarp: https://turbowarp.org/#422853157