No, the original cause of COVID-19 was not someone eating bats in China. That is a myth. But bats are not off the hook because there is a chance that the SARS CoV-2 virus did originate in bat poop...
The origin of COVID-19 (SARS-Cov2) has been the subject of intense academic discussion. Unfortunately, some theories would make for an intriguing Hollywood production but are based more on rumour...