Cook the rice in your instant pot or saucepan according to package directions. Once done, set aside.
Using a peeler, shave the carrots lengthwise into ribbons, rotating as you peel.
In a medium skillet, heat the olive oil. Cook the carrots until slightly softened. Sprinkle with salt and pepper, then transfer to a plate. Set aside.
In the same skillet, cook the mushrooms until tender, around 4-5 minutes. Sprinkle with salt and pepper, and place on the same plate as the carrots. Set aside.
In a small bowl, mix together the sesame oil, sugar, 1 Tbsp soy sauce and 1 tsp hot sauce until sugar has dissolved.
In the same skillet as the veggies, cook the ground beef and garlic until the ground beef is no longer pink. Add in 1 Tbsp soy sauce and cook until soy sauce is mostly evaporated. Season with salt and pepper.
Divide the rice into 2 bowls. Top with the vegetables and meat. Drizzle 2 tsp vinegar over both bowls, as well as the hot sauce mixture. Drizzle an additional 1 tsp hot sauce over each bowl, if desired.