The fact that the government cut off access to 20% of U.S. oil & gas production is sending energy prices straight up (supply & demand). Since all goods and services rely on energy, ALL prices are going straight up.
Add onto that the new and forecast tax increases that businesses will face and demands for increased wages and that's a recipe for runaway inflation...10th grade econ stuff there, but since you stopped at 9th grade I wouldn't expect you to know this.