Try to get to the turquoise box. Use arrow keys to move. Press down to crouch. Magenta will push you down, yellow bounces you up. Red is bad. Press skip if needed. You will automatically bounce, so the up key does nothing. I you don't want the moving background, press a. If you want it again, press b. The background colors won't affect you.
Thank you @jecat4 for the hamburger graphic. Thank you @Will_Wam for the bouncy y axis. Those two projects: https://scratch.mit.edu/projects/545147074 https://scratch.mit.edu/projects/174934840