"Scientists from multiple countries have published and analyzed genomes of the causative agent, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and they overwhelmingly conclude that this coronavirus originated in wildlife, as have so many other emerging pathogens."
The Wuhan Institute of Virology is a Biosafety level 4, which is the highest level of safety. This means that individuals that work in the lab change their clothing before entering, shower before leaving. They also work in full-body pressurized suits, or the microbes are in a gas-tight sealed container. The building is also constructed to ensure the safety of individuals in the lab and to prevent the microbes from escaping the space.
It has been suggested that the SARS-CoV-2 could not have evolved as it targets and affects too many parts of the body. However, the spiked proteins of SARS-CoV-2, result in suboptimal receptor binding. Meaning that a piece of the virus that sticks out does not fit perfectly into a part of a human cell that allows it to enter that cell. If the virus had been engineered and release, this binding would have been designed to be optimal, meaning that the piece of the virus would perfectly fit into the part of a human cell in order to enter. This can be thought of as a lock and key scenario where the virus has a key to a lock on the outside of a human cell. This indicates that the virus evolved, and entered humans via a crossover event between animals and humans. This is supported by the fact that the most similar sequence for the virus has been found in bats.