What if there were no antibiotics?

The bacterial world is diverse and large. Every second more and more new and perfect representatives of this kingdom are formed, since these organisms multiply much faster than other creatures, thereby improving their generations. Most bacteria live inside another organism, causing harm to the host. Therefore, some fungi, plants and bacteria have learned to fight pests. They make antibiotics. These are chemicals produced by microorganisms that can adversely affect other organisms. The presence of antibiotics in nature is very large. If they did not exist, then most likely the bacteria would take over the planet, people and other organisms would simply die.