Why do bacteria have ribosomes?

Ribosomes:

1. Ribosomes are cellular organelles that are involved in protein synthesis.
2. Like other organisms, bacteria need ribosomes in order to make proteins.
3. Ribosomes are found mainly bound to the endoplasmic reticulum and the nuclear envelope.
4. As well as the cells are freely dispersed throughout the cytoplasm, depending on whether they are plants, animals, or bacteria.
5. Bacterial cytoplasm contains $70S$ ribosomes that translate mRNA into proteins.